diff options
-rw-r--r-- | rules/hfilter.lua | 466 | ||||
-rw-r--r-- | rules/html.lua | 76 | ||||
-rw-r--r-- | rules/regexp/drugs.lua | 83 | ||||
-rw-r--r-- | rules/regexp/fraud.lua | 74 | ||||
-rw-r--r-- | rules/regexp/headers.lua | 491 | ||||
-rw-r--r-- | rules/regexp/lotto.lua | 33 | ||||
-rw-r--r-- | rules/rspamd.classifiers.lua | 144 | ||||
-rw-r--r-- | rules/rspamd.lua | 120 |
8 files changed, 1487 insertions, 0 deletions
diff --git a/rules/hfilter.lua b/rules/hfilter.lua new file mode 100644 index 000000000..8a5ba9b4e --- /dev/null +++ b/rules/hfilter.lua @@ -0,0 +1,466 @@ +--[[ +Copyright (c) 2011-2015, Vsevolod Stakhov <vsevolod@highsecure.ru> +Copyright (c) 2013-2015, Alexey Savelyev <info@homeweb.ru> +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this +list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright notice, +this list of conditions and the following disclaimer in the documentation +and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +]]-- + + +-- Weight for checks_hellohost and checks_hello: 5 - very hard, 4 - hard, 3 - meduim, 2 - low, 1 - very low. +-- From HFILTER_HELO_* and HFILTER_HOSTNAME_* symbols the maximum weight is selected in case of their actuating. + + +--local dumper = require 'pl.pretty'.dump +local rspamd_regexp = require "rspamd_regexp" + +local checks_hellohost = { + ['[.-]gprs[.-]'] = 5, ['gprs[.-][0-9]'] = 5, ['[0-9][.-]?gprs'] = 5, + ['[.-]cdma[.-]'] = 5, ['cdma[.-][0-9]'] = 5, ['[0-9][.-]?cdma'] = 5, + ['[.-]homeuser[.-]'] = 5, ['homeuser[.-][0-9]'] = 5, ['[0-9][.-]?homeuser'] = 5, + ['[.-]dhcp[.-]'] = 5, ['dhcp[.-][0-9]'] = 5, ['[0-9][.-]?dhcp'] = 5, + ['[.-]catv[.-]'] = 5, ['catv[.-][0-9]'] = 5, ['[0-9][.-]?catv'] = 5, + ['[.-]wifi[.-]'] = 5, ['wifi[.-][0-9]'] = 5, ['[0-9][.-]?wifi'] = 5, + ['[.-]dial-?up[.-]'] = 5, ['dial-?up[.-][0-9]'] = 5, ['[0-9][.-]?dial-?up'] = 5, + ['[.-]dynamic[.-]'] = 5, ['dynamic[.-][0-9]'] = 5, ['[0-9][.-]?dynamic'] = 5, + ['[.-]dyn[.-]'] = 5, ['dyn[.-][0-9]'] = 5, ['[0-9][.-]?dyn'] = 5, + ['[.-]clients?[.-]'] = 5, ['clients?[.-][0-9]'] = 5, ['[0-9][.-]?clients?'] = 5, + ['[.-]dynip[.-]'] = 5, ['dynip[.-][0-9]'] = 5, ['[0-9][.-]?dynip'] = 5, + ['[.-]broadband[.-]'] = 5, ['broadband[.-][0-9]'] = 5, ['[0-9][.-]?broadband'] = 5, + ['[.-]broad[.-]'] = 5, ['broad[.-][0-9]'] = 5, ['[0-9][.-]?broad'] = 5, + ['[.-]bredband[.-]'] = 5, ['bredband[.-][0-9]'] = 5, ['[0-9][.-]?bredband'] = 5, + ['[.-]nat[.-]'] = 5, ['nat[.-][0-9]'] = 5, ['[0-9][.-]?nat'] = 5, + ['[.-]pptp[.-]'] = 5, ['pptp[.-][0-9]'] = 5, ['[0-9][.-]?pptp'] = 5, + ['[.-]pppoe[.-]'] = 5, ['pppoe[.-][0-9]'] = 5, ['[0-9][.-]?pppoe'] = 5, + ['[.-]ppp[.-]'] = 5, ['ppp[.-][0-9]'] = 5, ['[0-9][.-]?ppp'] = 5, + ['[.-]modem[.-]'] = 5, ['modem[.-][0-9]'] = 5, ['[0-9][.-]?modem'] = 5, + ['[.-]cablemodem[.-]'] = 5, ['cablemodem[.-][0-9]'] = 5, ['[0-9][.-]?cablemodem'] = 5, + ['[.-]comcast[.-]'] = 5, ['comcast[.-][0-9]'] = 5, ['[0-9][.-]?comcast'] = 5, + ['[.-][a|x]?dsl-dynamic[.-]'] = 5, ['[a|x]?dsl-dynamic[.-]?[0-9]'] = 5, ['[0-9][.-]?[a|x]?dsl-dynamic'] = 5, + ['[.-][a|x]?dsl[.-]'] = 4, ['[a|x]?dsl[.-]?[0-9]'] = 4, ['[0-9][.-]?[a|x]?dsl'] = 4, + ['[.-][a|x]?dsl-line[.-]'] = 4, ['[a|x]?dsl-line[.-]?[0-9]'] = 4, ['[0-9][.-]?[a|x]?dsl-line'] = 4, + ['[.-]in-?addr[.-]'] = 4, ['in-?addr[.-][0-9]'] = 4, ['[0-9][.-]?in-?addr'] = 4, + ['[.-]pool[.-]'] = 4, ['pool[.-][0-9]'] = 4, ['[0-9][.-]?pool'] = 4, + ['[.-]fibertel[.-]'] = 4, ['fibertel[.-][0-9]'] = 4, ['[0-9][.-]?fibertel'] = 4, + ['[.-]fbx[.-]'] = 4, ['fbx[.-][0-9]'] = 4, ['[0-9][.-]?fbx'] = 4, + ['[.-]unused-addr[.-]'] = 3, ['unused-addr[.-][0-9]'] = 3, ['[0-9][.-]?unused-addr'] = 3, + ['[.-]cable[.-]'] = 3, ['cable[.-][0-9]'] = 3, ['[0-9][.-]?cable'] = 3, + ['[.-]kabel[.-]'] = 3, ['kabel[.-][0-9]'] = 3, ['[0-9][.-]?kabel'] = 3, + ['[.-]host[.-]'] = 2, ['host[.-][0-9]'] = 2, ['[0-9][.-]?host'] = 2, + ['[.-]customers?[.-]'] = 1, ['customers?[.-][0-9]'] = 1, ['[0-9][.-]?customers?'] = 1, + ['[.-]user[.-]'] = 1, ['user[.-][0-9]'] = 1, ['[0-9][.-]?user'] = 1, + ['[.-]peer[.-]'] = 1, ['peer[.-][0-9]'] = 1, ['[0-9][.-]?peer'] = 1 +} + +local checks_hello = { + ['^[^\\.]+$'] = 5, -- for helo=COMPUTER, ANNA, etc... Without dot in helo + ['localhost$'] = 5, + ['^(dsl)?(device|speedtouch)\\.lan$'] = 5, + ['\\.(lan|local|home|localdomain|intra|in-addr.arpa|priv|online|user|veloxzon)$'] = 5 +} + +local checks_hello_badip = { + ['^0\\.'] = 5, ['^::1$'] = 5, --loopback ipv4, ipv6 + ['^127\\.'] = 5, ['^10\\.'] = 5, ['^192\\.168\\.'] = 5, --local ipv4 + ['^172\\.1[6-9]\\.'] = 5, ['^172\\.2[0-9]\\.'] = 5, ['^172\\.3[01]\\.'] = 5, --local ipv4 + ['^169\\.254\\.'] = 5, --chanel ipv4 + ['^192\\.0\\.0\\.'] = 5, --IETF Protocol + ['^192\\.88\\.99\\.'] = 5, --RFC3068 + ['^100.6[4-9]\\.'] = 5, ['^100.[7-9]\\d\\.'] = 5, ['^100.1[01]\\d\\.'] = 5, ['^100.12[0-7]\\d\\.'] = 5, --RFC6598 + ['^\\d\\.\\d\\.\\d\\.255$'] = 5, --multicast ipv4 + ['^192\\.0\\.2\\.'] = 5, ['^198\\.51\\.100\\.'] = 5, ['^203\\.0\\.113\\.'] = 5, --sample + ['^fe[89ab][0-9a-f]::'] = 5, ['^fe[cdf][0-9a-f]:'] = 5, --local ipv6 (fe80:: - febf::, fec0:: - feff::) + ['^2001:db8::'] = 5, --reserved RFC 3849 for ipv6 + ['^fc00::'] = 5, ['^ffxx::'] = 5 --unicast, multicast ipv6 +} + +local checks_hello_bareip = { + '^\\d+[x.-]\\d+[x.-]\\d+[x.-]\\d+$', --bareip ipv4, + '^[0-9a-f]+:' --bareip ipv6 +} + +local config = { + ['helo_enabled'] = false, + ['hostname_enabled'] = false, + ['from_enabled'] = false, + ['rcpt_enabled'] = false, + ['mid_enabled'] = false, + ['url_enabled'] = false +} + +local function check_regexp(str, regexp_text) + local re = rspamd_regexp.create_cached(regexp_text, 'i') + if re:match(str) then return true end + return false +end + +local function split(str, delim, maxNb) + -- Eliminate bad cases... + if string.find(str, delim) == nil then + return { str } + end + if maxNb == nil or maxNb < 1 then + maxNb = 0 -- No limit + end + local result = {} + local pat = "(.-)" .. delim .. "()" + local nb = 0 + local lastPos + for part, pos in string.gmatch(str, pat) do + nb = nb + 1 + result[nb] = part + lastPos = pos + if nb == maxNb then break end + end + -- Handle the last field + if nb ~= maxNb then + result[nb + 1] = string.sub(str, lastPos) + end + return result +end + +local function check_fqdn(domain) + if check_regexp(domain, '(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\\.)+[a-zA-Z0-9-]{2,63}\\.?$)') then + return true + end + return false +end + +-- host: host for check +-- symbol_suffix: suffix for symbol +-- eq_ip: ip for comparing or empty string +-- eq_host: host for comparing or empty string +local function check_host(task, host, symbol_suffix, eq_ip, eq_host) + + local function check_host_cb_mx_a(resolver, to_resolve, results, err) + task:inc_dns_req() + if not results then + task:insert_result('HFILTER_' .. symbol_suffix .. '_NORESOLVE_MX', 1.0) + end + end + local function check_host_cb_mx(resolver, to_resolve, results, err) + task:inc_dns_req() + if not results then + task:insert_result('HFILTER_' .. symbol_suffix .. '_NORES_A_OR_MX', 1.0) + else + for _,mx in pairs(results) do + if mx['name'] then + task:get_resolver():resolve_a(task:get_session(), task:get_mempool(), mx['name'], check_host_cb_mx_a) + end + end + end + end + local function check_host_cb_a(resolver, to_resolve, results, err) + task:inc_dns_req() + + if not results then + task:get_resolver():resolve_mx(task:get_session(), task:get_mempool(), host, check_host_cb_mx) + elseif eq_ip ~= '' then + for _,result in pairs(results) do + if result:to_string() == eq_ip then + return true + end + end + task:insert_result('HFILTER_' .. symbol_suffix .. '_IP_A', 1.0) + end + end + + if host then + host = string.lower(host) + else + return false + end + if eq_host then + eq_host = string.lower(eq_host) + else + eq_host = '' + end + + if check_fqdn(host) then + if eq_host == '' or eq_host ~= 'unknown' or eq_host ~= host then + task:get_resolver():resolve_a(task:get_session(), task:get_mempool(), host, check_host_cb_a) + end + else + task:insert_result('HFILTER_' .. symbol_suffix .. '_NOT_FQDN', 1.0) + end + + return true +end + +-- +local function hfilter(task) + -- Links checks + if config['url_enabled'] then + local parts = task:get_text_parts() + if parts then + --One text part-- + local total_parts_len = 0 + local text_parts_count = 0 + local selected_text_part = nil + for _,p in ipairs(parts) do + total_parts_len = total_parts_len + p:get_length() + + if not p:is_html() then + text_parts_count = text_parts_count + 1 + selected_text_part = p + end + end + if total_parts_len > 0 then + local urls = task:get_urls() + if urls then + local total_url_len = 0 + for _,url in ipairs(urls) do + total_url_len = total_url_len + url:get_length() + end + if total_url_len > 0 then + if total_url_len + 7 > total_parts_len then + task:insert_result('HFILTER_URL_ONLY', 1.00) + elseif text_parts_count == 1 and selected_text_part and selected_text_part:get_length() < 1024 then + if selected_text_part:get_lines_count() < 2 then + task:insert_result('HFILTER_URL_ONELINE', 1.00) + end + end + end + end + end + end + end + + --No more checks for auth user + if task:get_user() ~= nil then + return false + end + + --local message = task:get_message() + local ip = false + local rip = task:get_from_ip() + if rip and rip:is_valid() then + ip = rip:to_string() + end + + -- Check's HELO + local weight_helo = 0 + if config['helo_enabled'] then + local helo = task:get_helo() + if helo then + helo = string.gsub(helo, '[%[%]]', '') + -- Regexp check HELO (checks_hello_badip) + local find_badip = false + for regexp,weight in pairs(checks_hello_badip) do + if check_regexp(helo, regexp) then + task:insert_result('HFILTER_HELO_BADIP', 1.0) + find_badip = true + break + end + end + + -- Regexp check HELO (checks_hello_bareip) + local find_bareip = false + if not find_badip then + for _,regexp in pairs(checks_hello_bareip) do + if check_regexp(helo, regexp) then + task:insert_result('HFILTER_HELO_BAREIP', 1.0) + find_bareip = true + break + end + end + end + + if not find_badip and not find_bareip then + -- Regexp check HELO (checks_hello) + for regexp,weight in pairs(checks_hello) do + if check_regexp(helo, regexp) then + weight_helo = weight + break + end + end + -- Regexp check HELO (checks_hellohost) + for regexp,weight in pairs(checks_hellohost) do + if check_regexp(helo, regexp) then + if weight > weight_helo then + weight_helo = weight + end + break + end + end + --FQDN check HELO + if ip and helo and weight_helo == 0 then + check_host(task, helo, 'HELO', ip, hostname) + end + end + else + task:insert_result('HFILTER_HELO_UNKNOWN', 1.0) + end + end + + -- Check's HOSTNAME + local weight_hostname = 0 + if config['hostname_enabled'] then + local hostname = task:get_hostname() + if hostname then + -- Check regexp HOSTNAME + if hostname == 'unknown' then + task:insert_result('HFILTER_HOSTNAME_UNKNOWN', 1.00) + else + for regexp,weight in pairs(checks_hellohost) do + if check_regexp(hostname, regexp) then + weight_hostname = weight + break + end + end + end + else + task:insert_result('HFILTER_HOSTNAME_UNKNOWN', 1.00) + end + end + + --Insert weight's for HELO or HOSTNAME + if weight_helo > 0 and weight_helo >= weight_hostname then + task:insert_result('HFILTER_HELO_' .. weight_helo, 1.0) + elseif weight_hostname > 0 and weight_hostname > weight_helo then + task:insert_result('HFILTER_HOSTNAME_' .. weight_hostname, 1.0) + end + + -- MAILFROM checks -- + local frombounce = false + if config['from_enabled'] then + local from = task:get_from(1) + if from then + --FROM host check + for _,fr in ipairs(from) do + local fr_split = split(fr['addr'], '@', 0) + if table.maxn(fr_split) == 2 then + check_host(task, fr_split[2], 'FROMHOST', '', '') + if fr_split[1] == 'postmaster' then + frombounce = true + end + end + end + else + task:insert_result('HFILTER_FROM_BOUNCE', 1.00) + frombounce = true + end + end + + -- Recipients checks -- + if config['rcpt_enabled'] then + local rcpt = task:get_recipients() + if rcpt then + local count_rcpt = table.maxn(rcpt) + if frombounce then + if count_rcpt > 1 then + task:insert_result('HFILTER_RCPT_BOUNCEMOREONE', 1.00) + end + end + end + end + + --Message ID host check + if config['mid_enabled'] then + local message_id = task:get_message_id() + if message_id then + local mid_split = split(message_id, '@', 0) + if table.maxn(mid_split) == 2 and not string.find(mid_split[2], 'local') then + check_host(task, mid_split[2], 'MID', '', '') + end + end + end + + return false +end + +local symbols_enabled = {} + +local symbols_helo = { + "HFILTER_HELO_BAREIP", + "HFILTER_HELO_BADIP", + "HFILTER_HELO_UNKNOWN", + "HFILTER_HELO_1", + "HFILTER_HELO_2", + "HFILTER_HELO_3", + "HFILTER_HELO_4", + "HFILTER_HELO_5", + "HFILTER_HELO_NORESOLVE_MX", + "HFILTER_HELO_NORES_A_OR_MX", + "HFILTER_HELO_IP_A", + "HFILTER_HELO_NOT_FQDN" +} +local symbols_hostname = { + "HFILTER_HOSTNAME_1", + "HFILTER_HOSTNAME_2", + "HFILTER_HOSTNAME_3", + "HFILTER_HOSTNAME_4", + "HFILTER_HOSTNAME_5", + "HFILTER_HOSTNAME_UNKNOWN" +} +local symbols_rcpt = { + "HFILTER_RCPT_BOUNCEMOREONE" +} +local symbols_mid = { + "HFILTER_MID_NORESOLVE_MX", + "HFILTER_MID_NORES_A_OR_MX", + "HFILTER_MID_NOT_FQDN" +} +local symbols_url = { + "HFILTER_URL_ONLY", + "HFILTER_URL_ONELINE" +} +local symbols_from = { + "HFILTER_FROMHOST_NORESOLVE_MX", + "HFILTER_FROMHOST_NORES_A_OR_MX", + "HFILTER_FROMHOST_NOT_FQDN", + "HFILTER_FROM_BOUNCE" +} + +local opts = rspamd_config:get_all_opt('hfilter') +if opts then + for k,v in pairs(opts) do + config[k] = v + end +end + +local function append_t(t, a) + for _,v in ipairs(a) do table.insert(t, v) end +end +if config['helo_enabled'] then + append_t(symbols_enabled, symbols_helo) +end +if config['hostname_enabled'] then + append_t(symbols_enabled, symbols_hostname) +end +if config['from_enabled'] then + append_t(symbols_enabled, symbols_from) +end +if config['rcpt_enabled'] then + append_t(symbols_enabled, symbols_rcpt) +end +if config['mid_enabled'] then + append_t(symbols_enabled, symbols_mid) +end +if config['url_enabled'] then + append_t(symbols_enabled, symbols_url) +end + +--dumper(symbols_enabled) +if table.maxn(symbols_enabled) > 0 then + rspamd_config:register_symbols(hfilter, 1.0, "HFILTER", symbols_enabled); +end diff --git a/rules/html.lua b/rules/html.lua new file mode 100644 index 000000000..1b218357b --- /dev/null +++ b/rules/html.lua @@ -0,0 +1,76 @@ +-- Licensed to the Apache Software Foundation (ASF) under one or more +-- contributor license agreements. See the NOTICE file distributed with +-- this work for additional information regarding copyright ownership. +-- The ASF licenses this file to you under the Apache License, Version 2.0 +-- (the "License"); you may not use this file except in compliance with +-- the License. You may obtain a copy of the License at: +-- +-- http://www.apache.org/licenses/LICENSE-2.0 +-- +-- Unless required by applicable law or agreed to in writing, software +-- distributed under the License is distributed on an "AS IS" BASIS, +-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +-- See the License for the specific language governing permissions and +-- limitations under the License. + +local reconf = config['regexp'] +local rspamd_regexp = require "rspamd_regexp" +local rspamd_logger = require "rspamd_logger" + +-- Messages that have only HTML part +reconf['MIME_HTML_ONLY'] = 'has_only_html_part()' + +local function check_html_image(task, min, max) + local tp = task:get_text_parts() + + for _,p in ipairs(tp) do + if p:is_html() then + local hc = p:get_html() + local len = p:get_raw_length() + + if len >= min and len < max then + local images = hc:get_images() + + if images then + for _,i in ipairs(images) do + if i['embedded'] then + return true + end + end + end + end + end + end +end + +rspamd_config.HTML_SHORT_LINK_IMG_1 = function(task) + return check_html_image(task, 0, 1024) +end +rspamd_config.HTML_SHORT_LINK_IMG_2 = function(task) + return check_html_image(task, 1024, 1536) +end +rspamd_config.HTML_SHORT_LINK_IMG_3 = function(task) + return check_html_image(task, 1536, 2048) +end +rspamd_config.R_EMPTY_IMAGE = function(task) + local tp = task:get_text_parts() -- get text parts in a message + + for _,p in ipairs(tp) do -- iterate over text parts array using `ipairs` + if p:is_html() then -- if the current part is html part + local hc = p:get_html() -- we get HTML context + local len = p:get_length() -- and part's length + + if len < 50 then -- if we have a part that has less than 50 bytes of text + local images = hc:get_images() -- then we check for HTML images + + if images then -- if there are images + for _,i in ipairs(images) do -- then iterate over images in the part + if i['height'] + i['width'] >= 400 then -- if we have a large image + return true -- add symbol + end + end + end + end + end + end +end
\ No newline at end of file diff --git a/rules/regexp/drugs.lua b/rules/regexp/drugs.lua new file mode 100644 index 000000000..7af31cd69 --- /dev/null +++ b/rules/regexp/drugs.lua @@ -0,0 +1,83 @@ +-- Actually these regular expressions were obtained from SpamAssassin project, so they are licensed by apache license: +-- +-- Licensed to the Apache Software Foundation (ASF) under one or more +-- contributor license agreements. See the NOTICE file distributed with +-- this work for additional information regarding copyright ownership. +-- The ASF licenses this file to you under the Apache License, Version 2.0 +-- (the "License"); you may not use this file except in compliance with +-- the License. You may obtain a copy of the License at: +-- +-- http://www.apache.org/licenses/LICENSE-2.0 +-- +-- Unless required by applicable law or agreed to in writing, software +-- distributed under the License is distributed on an "AS IS" BASIS, +-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +-- See the License for the specific language governing permissions and +-- limitations under the License. +-- +-- Drugs spam (viagra, pills etc) +-- XXX: remove this legacy to statfile + + +local reconf = config['regexp'] + +local drugs_diet1 = '/(?:\\b|\\s)[_\\W]{0,3}p[_\\W]{0,3}h[_\\W]{0,3}[e3\\xE8-\\xEB][_\\W]{0,3}n[_\\W]{0,3}t[_\\W]{0,3}[e3\\xE8-\\xEB][_\\W]{0,3}r[_\\W]{0,3}m[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}n[_\\W]{0,3}[e3\\xE8-\\xEB][_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_diet2 = '/(?:\\b|\\s)_{0,3}[i1!|l\\xEC-\\xEF][_\\W]?o[_\\W]?n[_\\W]?[a4\\xE0-\\xE6@][_\\W]?m[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?n_{0,3}\\b/irP' +local drugs_diet3 = '/\\bbontril\\b/irP' +local drugs_diet4 = '/\\bphendimetrazine\\b/irP' +local drugs_diet5 = '/\\bdiethylpropion\\b/irP' +local drugs_diet6 = '/(?:\\b|\\s)[_\\W]{0,3}M[_\\W]{0,3}[e3\\xE8-\\xEB][_\\W]{0,3}r[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}d[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_diet7 = '/\\b_{0,3}t[_\\W]?[e3\\xE8-\\xEB][_\\W]?n[_\\W]?u[_\\W]?a[_\\W]?t[_\\W]?[e3\\xE8-\\xEB]_{0,3}(?:\\b|\\s)/irP' +local drugs_diet8 = '/\\b_{0,3}d[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?d[_\\W]?r[_\\W][e3\\xE8-\\xEB[_\\W]?xx?_{0,3}\\b/irP' +local drugs_diet9 = '/\\b_{0,3}a[_\\W]?d[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?p[_\\W]?[e3\\xE8-\\xEB][_\\W]?x_{0,3}\\b/irP' +local drugs_diet10 = '/\\b_{0,3}x?x[_\\W]?[e3\\xE8-\\xEB][_\\W]?n[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?c[_\\W]?[a4\\xE0-\\xE6@][_\\W]?l_{0,3}\\b/irP' +reconf['DRUGS_DIET'] = string.format('((%s) | (%s) | (%s)) & ((%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s))', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], drugs_diet1, drugs_diet2, drugs_diet3, drugs_diet4, drugs_diet5, drugs_diet6, drugs_diet7, drugs_diet8, drugs_diet9, drugs_diet10) +local drugs_erectile1 = '/(?:\\b|\\s)[_\\W]{0,3}(?:\\\\\\/|V)[_\\W]{0,3}[ij1!|l\\xEC\\xED\\xEE\\xEF][_\\W]{0,3}[a40\\xE0-\\xE6@][_\\W]{0,3}[xyz]?[gj][_\\W]{0,3}r[_\\W]{0,3}[a40\\xE0-\\xE6@][_\\W]{0,3}x?[_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_erectile2 = '/\\bV(?:agira|igara|iaggra|iaegra)\\b/irP' +local drugs_erectile3 = '/(?:\\A|[\\s\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f])[_\\W]{0,3}C[_\\W]{0,3}[ij1!|l\\xEC\\xED\\xEE\\xEF][_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}l?[l!|1][_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}s[_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_erectile4 = '/\\bC(?:alis|ilias|ilais)\\b/irP' +local drugs_erectile5 = '/\\b_{0,3}s[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?l[_\\W]?d[_\\W]?[e3\\xE8-\\xEB][_\\W]?n[_\\W]?[a4\\xE0-\\xE6@][_\\W]?f[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?l c[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?t[_\\W]?r[_\\W]?[a4\\xE0-\\xE6@][_\\W]?t[_\\W]?[e3\\xE8-\\xEB]_{0,3}(?:\\b|\\s)/irP' +local drugs_erectile6 = '/\\b_{0,3}L[_\\W]?[e3\\xE8-\\xEB][_\\W]?(?:\\\\\\/|V)[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?t[_\\W]?r[_\\W]?[a4\\xE0-\\xE6@][_\\W]?(?:\\b|\\s)/irP' +local drugs_erectile8 = '/\\b_{0,3}T[_\\W]?[a4\\xE0-\\xE6@][_\\W]?d[_\\W]?[a4\\xE0-\\xE6@][_\\W]?l[_\\W]?[a4\\xE0-\\xE6@][_\\W]?f[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?l_{0,3}\\b/irP' +local drugs_erectile10 = '/\\b_{0,3}V[_\\W]?(?:i|\\ï\\;)[_\\W]?(?:a|\\à|\\å)\\;?[_\\W]?g[_\\W]?r[_\\W]?(?:a|\\à|\\å)\\b/irP' +local drugs_erectile11 = '/(?:\\b|\\s)_{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}p[_\\W]{0,3}c[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}[l!|1][_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}s_{0,3}\\b/irP' +reconf['DRUGS_ERECTILE'] = string.format('((%s) | (%s) | (%s)) & ((%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s))', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], drugs_erectile1, drugs_erectile2, drugs_erectile3, drugs_erectile4, drugs_erectile5, drugs_erectile6, drugs_erectile8, drugs_erectile10, drugs_erectile11) +local drugs_anxiety1 = '/(?:\\b|\\s)[_\\W]{0,3}x?x[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}n[_\\W]{0,3}[ea4\\xE1\\xE2\\xE3@][_\\W]{0,3}xx?_{0,3}\\b/irP' +local drugs_anxiety2 = '/\\bAlprazolam\\b/irP' +local drugs_anxiety3 = '/(?:\\b|\\s)[_\\W]{0,3}(?:\\\\\\/|V)[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}[l|][_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}[u\\xB5\\xF9-\\xFC][_\\W]{0,3}m\\b/irP' +local drugs_anxiety4 = '/\\b_{0,3}D[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?[a4\\xE0-\\xE6@][_\\W]?z[_\\W]?[ea3\\xE9\\xEA\\xEB][_\\W]?p[_\\W]?[a4\\xE0-\\xE6@][_\\W]?m_{0,3}\\b/irP' +local drugs_anxiety5 = '/(?:\\b|\\s)[a4\\xE0-\\xE6@][_\\W]?t[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?v[_\\W]?[a4\\xE0-\\xE6@][_\\W]?n_{0,3}\\b/irP' +local drugs_anxiety6 = '/\\b_{0,3}l[_\\W]?[o0\\xF2-\\xF6][_\\W]?r[_\\W]?[a4\\xE0-\\xE6@][_\\W]?z[_\\W]?[e3\\xE8-\\xEB][_\\W]?p[_\\W]?[a4\\xE0-\\xE6@][_\\W]?m_{0,3}\\b/irP' +local drugs_anxiety7 = '/\\b_{0,3}c[_\\W]?l[_\\W]?[o0\\xF2-\\xF6][_\\W]?n[_\\W]?[a4\\xE0-\\xE6@][_\\W]?z[_\\W]?e[_\\W]?p[_\\W]?[a4\\xE0-\\xE6@][_\\W]?m\\b/irP' +local drugs_anxiety8 = '/\\bklonopin\\b/irP' +local drugs_anxiety9 = '/\\brivotril\\b/irP' +reconf['DRUGS_ANXIETY'] = string.format('((%s) | (%s) | (%s)) & ((%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s))', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], drugs_anxiety1, drugs_anxiety2, drugs_anxiety3, drugs_anxiety4, drugs_anxiety5, drugs_anxiety6, drugs_anxiety7, drugs_anxiety8, drugs_anxiety9) +reconf['DRUGS_ANXIETY_EREC'] = string.format('(%s) & (%s)', reconf['DRUGS_ERECTILE'], reconf['DRUGS_ANXIETY']) +local drugs_pain1 = '/\\b_{0,3}h[_\\W]?y[_\\W]?d[_\\W]?r[_\\W]?[o0\\xF2-\\xF6][_\\W]?c[_\\W]?[o0\\xF2-\\xF6][_\\W]?d[_\\W]?[o0\\xF2-\\xF6][_\\W]?n[_\\W]?e_{0,3}\\b/irP' +local drugs_pain2 = '/\\b_{0,3}c[o0\\xF2-\\xF6]deine_{0,3}\\b/irP' +local drugs_pain3 = '/(?:\\b|\\s)[_\\W]{0,3}[u\\xB5\\xF9-\\xFC][_\\W]{0,3}l[_\\W]{0,3}t[_\\W]{0,3}r[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}m_{0,3}\\b/irP' +local drugs_pain4 = '/(?:\\b|\\s)[_\\W]{0,3}(?:\\\\\\/|V)[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}c[_\\W]{0,3}[o0\\xF2-\\xF6][_\\W]{0,3}d[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}ns?[_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_pain5 = '/\\b_{0,3}t[_\\W]?r[_\\W]?[a4\\xE0-\\xE6@][_\\W]?m[_\\W]?[a4\\xE0-\\xE6@][_\\W]?d[_\\W]?[o0\\xF2-\\xF6][_\\W]?[l!|1]_{0,3}\\b/irP' +local drugs_pain6 = '/\\b_{0,3}u[_\\W]?l[_\\W]?t[_\\W]?r[_\\W]?a[_\\W]?c[_\\W]?e[_\\W]?t_{0,3}\\b/irP' +local drugs_pain7 = '/\\b_{0,3}f[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?[o0\\xF2-\\xF6][_\\W]?r[_\\W]?[i1!|l\\xEC-\\xEF][_\\W]?c[_\\W]?[e3\\xE8-\\xEB][_\\W]?[t7]_{0,3}\\b/irP' +local drugs_pain8 = '/\\b_{0,3}c[_\\W]?[e3\\xE8-\\xEB][_\\W]?l[_\\W]?[e3\\xE8-\\xEB][_\\W]?b[_\\W]?r[_\\W]?[e3\\xE8-\\xEB][_\\W]?x_{0,3}\\b/irP' +local drugs_pain9 = '/(?:\\b|\\s)_{0,3}[i1!|l\\xEC-\\xEF]m[i1!|l\\xEC-\\xEF]tr[e3\\xE8-\\xEB]x_{0,3}\\b/irP' +local drugs_pain10 = '/(?:\\b|\\s)[_\\W]{0,3}(?:\\\\\\/|V)[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}[o0\\xF2-\\xF6][_\\W]{0,3}x[_\\W]{0,3}xx?_{0,3}\\b/irP' +local drugs_pain11 = '/\\bzebutal\\b/irP' +local drugs_pain12 = '/\\besgic plus\\b/irP' +local drugs_pain13 = '/\\bD[_\\W]?[a4\\xE0-\\xE6@][_\\W]?r[_\\W]?v[_\\W]?[o0\\xF2-\\xF6][_\\W]?n\\b/irP' +local drugs_pain14 = '/N[o0\\xF2-\\xF6]rc[o0\\xF2-\\xF6]/irP' +local drugs_pain = string.format('((%s) | (%s) | (%s)) & ((%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) || (%s) | (%s))', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], drugs_pain1, drugs_pain2, drugs_pain3, drugs_pain4, drugs_pain5, drugs_pain6, drugs_pain7, drugs_pain8, drugs_pain9, drugs_pain10, drugs_pain11, drugs_pain12, drugs_pain13, drugs_pain14) +local drugs_sleep1 = '/(?:\\b|\\s)[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}m[_\\W]{0,3}b[_\\W]{0,3}[i1!|l\\xEC-\\xEF][_\\W]{0,3}[e3\\xE8-\\xEB][_\\W]{0,3}n[_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_sleep2 = '/(?:\\b|\\s)[_\\W]{0,3}S[_\\W]{0,3}[o0\\xF2-\\xF6][_\\W]{0,3}n[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}t[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_sleep3 = '/\\b_{0,3}R[_\\W]?[e3\\xE8-\\xEB][_\\W]?s[_\\W]?t[_\\W]?[o0\\xF2-\\xF6][_\\W]?r[_\\W]?i[_\\W]?l_{0,3}\\b/irP' +local drugs_sleep4 = '/\\b_{0,3}H[_\\W]?[a4\\xE0-\\xE6@][_\\W]?l[_\\W]?c[_\\W]?i[_\\W]?[o0\\xF2-\\xF6][_\\W]?n_{0,3}\\b/irP' +local drugs_sleep = string.format('(%s) | (%s) | (%s) | (%s)', drugs_sleep1, drugs_sleep2, drugs_sleep3, drugs_sleep4) +local drugs_muscle1 = '/(?:\\b|\\s)[_\\W]{0,3}s[_\\W]{0,3}[o0\\xF2-\\xF6][_\\W]{0,3}m[_\\W]{0,3}[a4\\xE0-\\xE6@][_\\W]{0,3}(?:\\b|\\s)/irP' +local drugs_muscle2 = '/\\b_{0,3}cycl[o0\\xF2-\\xF6]b[e3\\xE8-\\xEB]nz[a4\\xE0-\\xE6@]pr[i1!|l\\xEC-\\xEF]n[e3\\xE8-\\xEB]_{0,3}(?:\\b|\\s)/irP' +local drugs_muscle3 = '/\\b_{0,3}f[_\\W]?l[_\\W]?[e3\\xE8-\\xEB][_\\W]?x[_\\W]?[e3\\xE8-\\xEB][_\\W]?r[_\\W]?[i1!|l\\xEC-\\xEF]_{0,3}[_\\W]?l_{0,3}\\b/irP' +local drugs_muscle4 = '/\\b_{0,3}z[_\\W]?a[_\\W]?n[_\\W]?a[_\\W]?f[_\\W]?l[_\\W]?e[_\\W]?x_{0,3}\\b/irP' +local drugs_muscle5 = '/\\bskelaxin\\b/irP' +reconf['DRUGS_MUSCLE'] = string.format('((%s) | (%s) | (%s)) & ((%s) | (%s) | (%s) | (%s) | (%s))', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], drugs_muscle1, drugs_muscle2, drugs_muscle3, drugs_muscle4, drugs_muscle5) +reconf['DRUGS_MANYKINDS'] = string.format('((%s) | (%s) | (%s)) & ((%s) + (%s) + (%s) + (%s) + (%s) + (%s) >= 3)', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], reconf['DRUGS_ERECTILE'], reconf['DRUGS_DIET'], drugs_pain, drugs_sleep, reconf['DRUGS_MUSCLE'], reconf['DRUGS_ANXIETY']) + diff --git a/rules/regexp/fraud.lua b/rules/regexp/fraud.lua new file mode 100644 index 000000000..2571a8712 --- /dev/null +++ b/rules/regexp/fraud.lua @@ -0,0 +1,74 @@ +-- Actually these regular expressions were obtained from SpamAssassin project, so they are licensed by apache license: +-- +-- Licensed to the Apache Software Foundation (ASF) under one or more +-- contributor license agreements. See the NOTICE file distributed with +-- this work for additional information regarding copyright ownership. +-- The ASF licenses this file to you under the Apache License, Version 2.0 +-- (the "License"); you may not use this file except in compliance with +-- the License. You may obtain a copy of the License at: +-- +-- http://www.apache.org/licenses/LICENSE-2.0 +-- +-- Unless required by applicable law or agreed to in writing, software +-- distributed under the License is distributed on an "AS IS" BASIS, +-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +-- See the License for the specific language governing permissions and +-- limitations under the License. +-- +-- Fraud messages (Nigeria spam, viagra, etc) +local reconf = config['regexp'] + +local fraud_dbi = '/(?:\\bdollars?\\b|\\busd(?:ollars)?(?:[0-9]|\\b)|\\bus\\$|\\$[0-9,.]{6,}|\\$[0-9].{0,8}[mb]illion|\\$[0-9.,]{2,10} ?m|\\beuros?\\b|u[.]?s[.]? [0-9.]+ m)/irP' +local fraud_kjv = '/(?:claim|concerning) (?:the|this) money/irP' +local fraud_irj = '/(?:finance|holding|securit(?:ies|y)) (?:company|firm|storage house)/irP' +local fraud_neb = '/(?:government|bank) of nigeria/irP' +local fraud_xjr = '/(?:who was a|as a|an? honest|you being a|to any) foreigner/irP' +local fraud_dpr = '/\\b(?:(?:respond|reply) (?:urgently|immediately)|(?:urgent|immediate|earliest) (?:reply|response))\\b/irP' +local fraud_pts = '/\\b(?:ass?ass?inat(?:ed|ion)|murder(?:e?d)?|kill(?:ed|ing)\\b[^.]{0,99}\\b(?:war veterans|rebels?))\\b/irP' +local fraud_bep = '/\\b(?:bank of nigeria|central bank of|trust bank|apex bank|amalgamated bank)\\b/irP' +local fraud_tdp = '/\\b(?:business partner(?:s|ship)?|silent partner(?:s|ship)?)\\b/irP' +local fraud_gan = '/\\b(?:charles taylor|serena|abacha|gu[eйи]i|sese[- ]?seko|kabila)\\b/irP' +local fraud_irt = '/\\b(?:compliments? of the|dear friend|dear sir|yours faithfully|season\'?s greetings)\\b/irP' +local fraud_aon = '/\\b(?:confidential|private|alternate|alternative) (?:(?:e-? *)?mail)\\b/irP' +local fraud_wny = '/\\b(?:disburse?(?:ment)?|incurr?(?:ed)?|remunerr?at(?:ed?|ion)|remm?itt?(?:ed|ance|ing)?)\\b/irP' +local fraud_ipk = '/\\b(?:in|to|visit) your country\\b/irP' +local fraud_qxx = '/\\b(?:my name is|i am) (?:mrs?|engr|barrister|dr|prince(?:ss)?)[. ]/irP' +local fraud_iou = '/\\b(?:no risks?|risk-? *free|free of risks?|100% safe)\\b/irP' +local fraud_ezy = '/\\b(?:of|the) late president\\b/irP' +local fraud_mly = '/\\b(?:reply|respond)\\b[^.]{0,50}\\b(?:to|through)\\b[^.]{0,50}\\@\\b/irP' +local fraud_zfj = '/\\b(?:wife|son|brother|daughter) of the late\\b/irP' +local fraud_kdt = '/\\bU\\.?S\\.?(?:D\\.?)?\\s*(?:\\$\\s*)?(?:\\d+,\\d+,\\d+|\\d+\\.\\d+\\.\\d+|\\d+(?:\\.\\d+)?\\s*milli?on)/irP' +local fraud_ulk = '/\\baffidavits?\\b/irP' +local fraud_bgp = '/\\battached to ticket number\\b/irP' +local fraud_fbi = '/\\bdisburs/irP' +local fraud_jbu = '/\\bforeign account\\b/irP' +local fraud_yww = '/\\bfurnish you with\\b/irP' +local fraud_jyg = '/\\bgive\\s+you .{0,15}(?:fund|money|total|sum|contact|percent)\\b/irP' +local fraud_xvw = '/\\bhonest cooperation\\b/irP' +local fraud_uuy = '/\\blegitimate business(?:es)?\\b/irP' +local fraud_snt = '/\\blocate(?: .{1,20})? extended relative/irP' +local fraud_ltx = '/\\bmilli?on (?:.{1,25} thousand\\s*)?(?:(?:united states|u\\.?s\\.?) dollars|(?i:U\\.?S\\.?D?))\\b/irP' +local fraud_jnb = '/\\boperat(?:e|ing)\\b[^.]{0,99}\\b(?:for(?:ei|ie)gn|off-? ?shore|over-? ?seas?) (?:bank )?accounts?\\b/irP' +local fraud_qfy = '/\\bover-? *(?:invoiced?|cost(?:s|ing)?)\\b/irP' +local fraud_wdr = '/\\bprivate lawyer\\b/irP' +local fraud_wfc = '/\\bsecur(?:e|ing) (?:the )?(?:funds?|monies)\\b/irP' +local fraud_aum = '/\\bthe desk of\\b/irP' +local fraud_mcq = '/\\btransaction\\b.{1,30}\\b(?:magnitude|diplomatic|strict|absolute|secret|confiden(?:tial|ce)|guarantee)/irP' +local fraud_etx = '/\\byour\\b[^.]{0,99}\\b(?:contact (?:details|information)|private (?:e?[- ]?mail|telephone|tel|phone|fax))\\b/irP' +local fraud_pvn = '/as the beneficiary/irP' +local fraud_fvu = '/award notification/irP' +local fraud_ckf = '/computer ballot system/irP' +local fraud_fcw = '/fiduciary agent/irP' +local fraud_mqo = '/foreign (?:business partner|customer)/irP' +local fraud_tcc = '/foreign (?:offshore )?(?:bank|account)/irP' +local fraud_gbw = '/god gives .{1,10}second chance/irP' +local fraud_nrg = '/i am contacting you/irP' +local fraud_rlx = '/lott(?:o|ery) (?:co,?ordinator|international)/irP' +local fraud_axf = '/magnanimity/irP' +local fraud_thj = '/modalit(?:y|ies)/irP' +local fraud_yqv = '/nigerian? (?:national|government)/irP' +local fraud_yja = '/over-invoice/irP' +local fraud_ypo = '/the total sum/irP' +local fraud_uoq = '/vital documents/irP' +reconf['ADVANCE_FEE_2'] = string.format('((%s) | (%s) | (%s)) & ((%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) >= 2)', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], fraud_kjv, fraud_irj, fraud_neb, fraud_xjr, fraud_ezy, fraud_zfj, fraud_kdt, fraud_bgp, fraud_fbi, fraud_jbu, fraud_jyg, fraud_xvw, fraud_snt, fraud_ltx, fraud_mcq, fraud_pvn, fraud_fvu, fraud_ckf, fraud_fcw, fraud_mqo, fraud_tcc, fraud_gbw, fraud_nrg, fraud_rlx, fraud_axf, fraud_thj, fraud_yqv, fraud_yja, fraud_ypo, fraud_uoq, fraud_dbi, fraud_bep, fraud_dpr, fraud_qxx, fraud_qfy, fraud_pts, fraud_tdp, fraud_gan, fraud_ipk, fraud_aon, fraud_wny, fraud_aum, fraud_wfc, fraud_yww, fraud_ulk, fraud_iou, fraud_jnb, fraud_irt, fraud_etx, fraud_wdr, fraud_uuy, fraud_mly) +reconf['ADVANCE_FEE_3'] = string.format('((%s) | (%s) | (%s)) & ((%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) >= 3)', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], fraud_kjv, fraud_irj, fraud_neb, fraud_xjr, fraud_ezy, fraud_zfj, fraud_kdt, fraud_bgp, fraud_fbi, fraud_jbu, fraud_jyg, fraud_xvw, fraud_snt, fraud_ltx, fraud_mcq, fraud_pvn, fraud_fvu, fraud_ckf, fraud_fcw, fraud_mqo, fraud_tcc, fraud_gbw, fraud_nrg, fraud_rlx, fraud_axf, fraud_thj, fraud_yqv, fraud_yja, fraud_ypo, fraud_uoq, fraud_dbi, fraud_bep, fraud_dpr, fraud_qxx, fraud_qfy, fraud_pts, fraud_tdp, fraud_gan, fraud_ipk, fraud_aon, fraud_wny, fraud_aum, fraud_wfc, fraud_yww, fraud_ulk, fraud_iou, fraud_jnb, fraud_irt, fraud_etx, fraud_wdr, fraud_uuy, fraud_mly) diff --git a/rules/regexp/headers.lua b/rules/regexp/headers.lua new file mode 100644 index 000000000..f026d548b --- /dev/null +++ b/rules/regexp/headers.lua @@ -0,0 +1,491 @@ +-- Actually these regular expressions were obtained from SpamAssassin project, so they are licensed by apache license: +-- +-- Licensed to the Apache Software Foundation (ASF) under one or more +-- contributor license agreements. See the NOTICE file distributed with +-- this work for additional information regarding copyright ownership. +-- The ASF licenses this file to you under the Apache License, Version 2.0 +-- (the "License"); you may not use this file except in compliance with +-- the License. You may obtain a copy of the License at: +-- +-- http://www.apache.org/licenses/LICENSE-2.0 +-- +-- Unless required by applicable law or agreed to in writing, software +-- distributed under the License is distributed on an "AS IS" BASIS, +-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +-- See the License for the specific language governing permissions and +-- limitations under the License. +-- +-- Definitions of header regexps + +local reconf = config['regexp'] +local rspamd_regexp = require "rspamd_regexp" + +-- Subject needs encoding +-- Define encodings types +local subject_encoded_b64 = 'Subject=/=\\?\\S+\\?B\\?/iX' +local subject_encoded_qp = 'Subject=/=\\?\\S+\\?Q\\?/iX' +-- Define whether subject must be encoded (contains non-7bit characters) +local subject_needs_mime = 'Subject=/[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f-\\xff]/X' +-- Final rule +reconf['SUBJECT_NEEDS_ENCODING'] = string.format('!(%s) & !(%s) & (%s)', subject_encoded_b64, subject_encoded_qp, subject_needs_mime) + +-- Detects that there is no space in From header (e.g. Some Name<some@host>) +reconf['R_NO_SPACE_IN_FROM'] = 'From=/\\S<[-\\w\\.]+\\@[-\\w\\.]+>/X' + +-- Detects missing subject +local has_subject = 'header_exists(Subject)' +local empty_subject = 'Subject=/^$/' +-- Final rule +reconf['MISSING_SUBJECT'] = string.format('!(%s) | (%s)', has_subject, empty_subject) + +-- Detects bad content-transfer-encoding for text parts +-- For text parts (text/plain and text/html mainly) +local r_ctype_text = 'content_type_is_type(text)' +-- Content transfer encoding is 7bit +local r_cte_7bit = 'compare_transfer_encoding(7bit)' +-- And body contains 8bit characters +local r_body_8bit = '/[^\\x01-\\x7f]/Pr' +reconf['R_BAD_CTE_7BIT'] = string.format('(%s) & (%s) & (%s)', r_ctype_text, r_cte_7bit, r_body_8bit) + +-- Detects missing To header +reconf['MISSING_TO']= '!raw_header_exists(To)'; + +-- Detects undisclosed recipients +local undisc_rcpt = 'To=/^<?undisclosed[- ]recipient/Hi' +reconf['R_UNDISC_RCPT'] = string.format('(%s) | (%s)', reconf['MISSING_TO'], undisc_rcpt) + +-- Detects missing Message-Id +local has_mid = 'header_exists(Message-Id)' +reconf['MISSING_MID'] = '!header_exists(Message-Id)'; + +-- Received seems to be fake +reconf['R_RCVD_SPAMBOTS'] = 'Received=/^from \\[\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\] by [-.\\w+]{5,255}; [SMTWF][a-z][a-z], [\\s\\d]?\\d [JFMAJSOND][a-z][a-z] \\d{4} \\d{2}:\\d{2}:\\d{2} [-+]\\d{4}$/mH' + +-- To header seems to be autogenerated +reconf['R_TO_SEEMS_AUTO'] = 'To=/^\\"?(?<bt>[-.\\w]{1,64})\\"?\\s<\\k<bt>\\@/H' + +-- Charset is missing in message +reconf['R_MISSING_CHARSET']= string.format('content_type_is_type(text) & !content_type_has_param(charset) & !%s', r_cte_7bit); + +-- Subject seems to be spam +reconf['R_SAJDING'] = 'Subject=/\\bsajding(?:om|a)?\\b/iH' + +-- Find forged Outlook MUA +-- Yahoo groups messages +local yahoo_bulk = 'Received=/from \\[\\S+\\] by \\S+\\.(?:groups|scd|dcn)\\.yahoo\\.com with NNFMP/H' +-- Outlook MUA +local outlook_mua = 'X-Mailer=/^Microsoft Outlook\\b/H' +local any_outlook_mua = 'X-Mailer=/^Microsoft Outlook\\b/H' +reconf['FORGED_OUTLOOK_HTML'] = string.format('!%s & %s & %s', yahoo_bulk, outlook_mua, 'has_only_html_part()') + +-- Recipients seems to be likely with each other (only works when recipients count is more than 5 recipients) +reconf['SUSPICIOUS_RECIPS'] = 'compare_recipients_distance(0.65)' + +-- Recipients list seems to be sorted +reconf['SORTED_RECIPS'] = 'is_recipients_sorted()' + +-- Spam string at the end of message to make statistics faults +reconf['TRACKER_ID'] = '/^[a-z0-9]{6,24}[-_a-z0-9]{2,36}[a-z0-9]{6,24}\\s*\\z/isPr' + + +-- From that contains encoded characters while base 64 is not needed as all symbols are 7bit +-- Regexp that checks that From header is encoded with base64 (search in raw headers) +local from_encoded_b64 = 'From=/\\=\\?\\S+\\?B\\?/iX' +-- From contains only 7bit characters (parsed headers are used) +local from_needs_mime = 'From=/[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f-\\xff]/Hr' +-- Final rule +reconf['FROM_EXCESS_BASE64'] = string.format('%s & !%s', from_encoded_b64, from_needs_mime) + +-- From that contains encoded characters while quoted-printable is not needed as all symbols are 7bit +-- Regexp that checks that From header is encoded with quoted-printable (search in raw headers) +local from_encoded_qp = 'From=/\\=\\?\\S+\\?Q\\?/iX' +-- Final rule +reconf['FROM_EXCESS_QP'] = string.format('%s & !%s', from_encoded_qp, from_needs_mime) + +-- To that contains encoded characters while base 64 is not needed as all symbols are 7bit +-- Regexp that checks that To header is encoded with base64 (search in raw headers) +local to_encoded_b64 = 'To=/\\=\\?\\S+\\?B\\?/iX' +-- To contains only 7bit characters (parsed headers are used) +local to_needs_mime = 'To=/[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f-\\xff]/Hr' +-- Final rule +reconf['TO_EXCESS_BASE64'] = string.format('%s & !%s', to_encoded_b64, to_needs_mime) + +-- To that contains encoded characters while quoted-printable is not needed as all symbols are 7bit +-- Regexp that checks that To header is encoded with quoted-printable (search in raw headers) +local to_encoded_qp = 'To=/\\=\\?\\S+\\?Q\\?/iX' +-- Final rule +reconf['TO_EXCESS_QP'] = string.format('%s & !%s', to_encoded_qp, to_needs_mime) + +-- Reply-To that contains encoded characters while base 64 is not needed as all symbols are 7bit +-- Regexp that checks that Reply-To header is encoded with base64 (search in raw headers) +local replyto_encoded_b64 = 'Reply-To=/\\=\\?\\S+\\?B\\?/iX' +-- Reply-To contains only 7bit characters (parsed headers are used) +local replyto_needs_mime = 'Reply-To=/[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f-\\xff]/Hr' +-- Final rule +reconf['REPLYTO_EXCESS_BASE64'] = string.format('%s & !%s', replyto_encoded_b64, replyto_needs_mime) + +-- Reply-To that contains encoded characters while quoted-printable is not needed as all symbols are 7bit +-- Regexp that checks that Reply-To header is encoded with quoted-printable (search in raw headers) +local replyto_encoded_qp = 'Reply-To=/\\=\\?\\S+\\?Q\\?/iX' +-- Final rule +reconf['REPLYTO_EXCESS_QP'] = string.format('%s & !%s', replyto_encoded_qp, replyto_needs_mime) + +-- Cc that contains encoded characters while base 64 is not needed as all symbols are 7bit +-- Regexp that checks that Cc header is encoded with base64 (search in raw headers) +local cc_encoded_b64 = 'Cc=/\\=\\?\\S+\\?B\\?/iX' +-- Co contains only 7bit characters (parsed headers are used) +local cc_needs_mime = 'Cc=/[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f-\\xff]/Hr' +-- Final rule +reconf['CC_EXCESS_BASE64'] = string.format('%s & !%s', cc_encoded_b64, cc_needs_mime) + +-- Cc that contains encoded characters while quoted-printable is not needed as all symbols are 7bit +-- Regexp that checks that Cc header is encoded with quoted-printable (search in raw headers) +local cc_encoded_qp = 'Cc=/\\=\\?\\S+\\?Q\\?/iX' +-- Final rule +reconf['CC_EXCESS_QP'] = string.format('%s & !%s', cc_encoded_qp, cc_needs_mime) + + +-- Detect forged outlook headers +-- OE X-Mailer header +local oe_mua = 'X-Mailer=/\\bOutlook Express [456]\\./H' +-- OE Message ID format +local oe_msgid_1 = 'Message-Id=/^<?[A-Za-z0-9-]{7}[A-Za-z0-9]{20}\\@hotmail\\.com>?$/mH' +local oe_msgid_2 = 'Message-Id=/^<?(?:[0-9a-f]{8}|[0-9a-f]{12})\\$[0-9a-f]{8}\\$[0-9a-f]{8}\\@\\S+>?$/H' +-- EZLM remail of message +local lyris_ezml_remailer = 'List-Unsubscribe=/<mailto:(?:leave-\\S+|\\S+-unsubscribe)\\@\\S+>$/H' +-- Header of wacky sendmail +local wacky_sendmail_version = 'Received=/\\/CWT\\/DCE\\)/H' +-- Iplanet received header +local iplanet_messaging_server = 'Received=/iPlanet Messaging Server/H' +-- Hotmail message id +local hotmail_baydav_msgid = 'Message-Id=/^<?BAY\\d+-DAV\\d+[A-Z0-9]{25}\\@phx\\.gbl?>$/H' +-- Sympatico message id +local sympatico_msgid = 'Message-Id=/^<?BAYC\\d+-PASMTP\\d+[A-Z0-9]{25}\\@CEZ\\.ICE>?$/H' +-- Mailman message id +local mailman_msgid = 'Message-ID=/^<mailman\\.\\d+\\.\\d+\\.\\d+\\..+\\@\\S+>$/H' +-- Message id seems to be forged +local unusable_msgid = string.format('(%s | %s | %s | %s | %s | %s)', + lyris_ezml_remailer, wacky_sendmail_version, iplanet_messaging_server, hotmail_baydav_msgid, sympatico_msgid, mailman_msgid) +-- Outlook express data seems to be forged +local forged_oe = string.format('(%s & !%s & !%s & !%s)', oe_mua, oe_msgid_1, oe_msgid_2, unusable_msgid) +-- Outlook specific headers +local outlook_dollars_mua = 'X-Mailer=/^Microsoft Outlook(?: 8| CWS, Build 9|, Build 10)\\./H' +local outlook_dollars_other = 'Message-Id=/^<?\\!\\~\\!>?/H' +local vista_msgid = 'Message-Id=/^<?[A-F\\d]{32}\\@\\S+>?$/H' +local ims_msgid = 'Message-Id=/^<?[A-F\\d]{36,40}\\@\\S+>?$/H' +-- Forged outlook headers +local forged_outlook_dollars = string.format('(%s & !%s & !%s & !%s & !%s & !%s)', + outlook_dollars_mua, oe_msgid_2, outlook_dollars_other, vista_msgid, ims_msgid, unusable_msgid) +-- Outlook versions that should be excluded from summary rule +local fmo_excl_o3416 = 'X-Mailer=/^Microsoft Outlook, Build 10.0.3416$/H' +local fmo_excl_oe3790 = 'X-Mailer=/^Microsoft Outlook Express 6.00.3790.3959$/H' +-- Summary rule for forged outlook +reconf['FORGED_MUA_OUTLOOK'] = string.format('(%s | %s) & !%s & !%s & !%s', + forged_oe, forged_outlook_dollars, fmo_excl_o3416, fmo_excl_oe3790, vista_msgid) + +-- HTML outlook signs +local mime_html = 'content_type_is_type(text) & content_type_is_subtype(/.?html/)' +local tag_exists_html = 'has_html_tag(html)' +local tag_exists_head = 'has_html_tag(head)' +local tag_exists_meta = 'has_html_tag(meta)' +local tag_exists_body = 'has_html_tag(body)' +reconf['FORGED_OUTLOOK_TAGS'] = string.format('!%s & %s & %s & !(%s & %s & %s & %s)', + yahoo_bulk, any_outlook_mua, mime_html, tag_exists_html, tag_exists_head, + tag_exists_meta, tag_exists_body) + +-- Forged OE/MSO boundary +reconf['SUSPICIOUS_BOUNDARY'] = 'Content-Type=/^\\s*multipart.+boundary="----=_NextPart_000_[A-Z\\d]{4}_(00EBFFA4|0102FFA4|32C6FFA4|3302FFA4)\\.[A-Z\\d]{8}"[\\r\\n]*$/siX' +-- Forged OE/MSO boundary +reconf['SUSPICIOUS_BOUNDARY2'] = 'Content-Type=/^\\s*multipart.+boundary="----=_NextPart_000_[A-Z\\d]{4}_(01C6527E)\\.[A-Z\\d]{8}"[\\r\\n]*$/siX' +-- Forged OE/MSO boundary +reconf['SUSPICIOUS_BOUNDARY3'] = 'Content-Type=/^\\s*multipart.+boundary="-----000-00\\d\\d-01C[\\dA-F]{5}-[\\dA-F]{8}"[\\r\\n]*$/siX' +-- Forged OE/MSO boundary +local suspicious_boundary_01C4 = 'Content-Type=/^\\s*multipart.+boundary="----=_NextPart_000_[A-Z\\d]{4}_01C4[\\dA-F]{4}\\.[A-Z\\d]{8}"[\\r\\n]*$/siX' +local suspicious_boundary_01C4_date = 'Date=/^\\s*\\w\\w\\w,\\s+\\d+\\s+\\w\\w\\w 20(0[56789]|1\\d)/' +reconf['SUSPICIOUS_BOUNDARY4'] = string.format('(%s) & (%s)', suspicious_boundary_01C4, suspicious_boundary_01C4_date) + +-- Detect forged The Bat! headers +-- The Bat! X-Mailer header +local thebat_mua_any = 'X-Mailer=/^\\s*The Bat!/H' +-- The Bat! common Message-ID template +local thebat_msgid_common = 'Message-ID=/^<?\\d+\\.\\d+\\@\\S+>?$/mH' +-- Correct The Bat! Message-ID template +local thebat_msgid = 'Message-ID=/^<?\\d+\\.(19[789]\\d|20\\d\\d)(0\\d|1[012])([012]\\d|3[01])([0-5]\\d)([0-5]\\d)([0-5]\\d)\\@\\S+>?/mH' +-- Summary rule for forged The Bat! Message-ID header +reconf['FORGED_MUA_THEBAT_MSGID'] = string.format('(%s) & !(%s) & (%s) & !(%s)', thebat_mua_any, thebat_msgid, thebat_msgid_common, unusable_msgid) +-- Summary rule for forged The Bat! Message-ID header with unknown template +reconf['FORGED_MUA_THEBAT_MSGID_UNKNOWN'] = string.format('(%s) & !(%s) & !(%s) & !(%s)', thebat_mua_any, thebat_msgid, thebat_msgid_common, unusable_msgid) + + +-- Detect forged KMail headers +-- KMail User-Agent header +local kmail_mua = 'User-Agent=/^\\s*KMail\\/1\\.\\d+\\.\\d+/H' +-- KMail common Message-ID template +local kmail_msgid_common = 'Message-Id=/^<?\\s*\\d+\\.\\d+\\.\\S+\\@\\S+>?$/mH' +function kmail_msgid (task) + local regexp_text = '<(\\S+)>\\|(19[789]\\d|20\\d\\d)(0\\d|1[012])([012]\\d|3[01])([0-5]\\d)([0-5]\\d)\\.\\d+\\.\\1$' + local re = rspamd_regexp.create_cached(regexp_text) + local header_msgid = task:get_header('Message-Id') + if header_msgid then + local header_from = task:get_header('From') + if header_from and re:match(header_from.."|"..header_msgid) then return true end + end + return false +end +-- Summary rule for forged KMail Message-ID header +reconf['FORGED_MUA_KMAIL_MSGID'] = string.format('(%s) & (%s) & !(%s) & !(%s)', kmail_mua, kmail_msgid_common, 'kmail_msgid', unusable_msgid) +-- Summary rule for forged KMail Message-ID header with unknown template +reconf['FORGED_MUA_KMAIL_MSGID_UNKNOWN'] = string.format('(%s) & !(%s) & !(%s)', kmail_mua, kmail_msgid_common, unusable_msgid) + +-- Detect forged Opera Mail headers +-- Opera Mail User-Agent header +local opera1x_mua = 'User-Agent=/^\\s*Opera Mail\\/1[01]\\.\\d+ /H' +-- Opera Mail Message-ID template +local opera1x_msgid = 'Message-ID=/^<?op\\.[a-z\\d]{14}\\@\\S+>?$/H' +-- Suspicious Opera Mail User-Agent header +local suspicious_opera10w_mua = 'User-Agent=/^\\s*Opera Mail\\/10\\.\\d+ \\(Windows\\)$/H' +-- Suspicious Opera Mail Message-ID, apparently from KMail +local suspicious_opera10w_msgid = 'Message-Id=/^<?2009\\d{8}\\.\\d+\\.\\S+\\@\\S+?>$/H' +-- Summary rule for forged Opera Mail User-Agent header and Message-ID header from KMail +reconf['SUSPICIOUS_OPERA_10W_MSGID'] = string.format('(%s) & (%s)', suspicious_opera10w_mua, suspicious_opera10w_msgid) +-- Summary rule for forged Opera Mail Message-ID header +reconf['FORGED_MUA_OPERA_MSGID'] = string.format('(%s) & !(%s) & !(%s) & !(%s)', opera1x_mua, opera1x_msgid, reconf['SUSPICIOUS_OPERA_10W_MSGID'], unusable_msgid) + + +-- Detect forged Mozilla Mail/Thunderbird/Seamonkey headers +-- Mozilla based X-Mailer +local user_agent_mozilla5 = 'User-Agent=/^\\s*Mozilla\\/5\\.0/H' +local user_agent_thunderbird = 'User-Agent=/^\\s*(Thunderbird|Mozilla Thunderbird|Mozilla\\/.*Gecko\\/.*Thunderbird\\/)/H' +local user_agent_seamonkey = 'User-Agent=/^\\s*Mozilla\\/5\\.0\\s.+\\sSeaMonkey\\/\\d+\\.\\d+/H' +local user_agent_mozilla = string.format('(%s) & !(%s) & !(%s)', user_agent_mozilla5, user_agent_thunderbird, user_agent_seamonkey) +-- Mozilla based common Message-ID template +local mozilla_msgid_common = 'Message-ID=/^\\s*<[\\dA-F]{8}\\.\\d{1,7}\\@([^>\\.]+\\.)+[^>\\.]+>$/H' +local mozilla_msgid = 'Message-ID=/^\\s*<(3[3-9A-F]|4[\\dA-F]|5[\\dA-F])[\\dA-F]{6}\\.(\\d0){1,4}\\d\\@([^>\\.]+\\.)+[^>\\.]+>$/H' +-- Summary rule for forged Mozilla Mail Message-ID header +reconf['FORGED_MUA_MOZILLA_MAIL_MSGID'] = string.format('(%s) & (%s) & !(%s) & !(%s)', user_agent_mozilla, mozilla_msgid_common, mozilla_msgid, unusable_msgid) +reconf['FORGED_MUA_MOZILLA_MAIL_MSGID_UNKNOWN'] = string.format('(%s) & !(%s) & !(%s) & !(%s)', user_agent_mozilla, mozilla_msgid_common, mozilla_msgid, unusable_msgid) +-- Summary rule for forged Thunderbird Message-ID header +reconf['FORGED_MUA_THUNDERBIRD_MSGID'] = string.format('(%s) & (%s) & !(%s) & !(%s)', user_agent_thunderbird, mozilla_msgid_common, mozilla_msgid, unusable_msgid) +reconf['FORGED_MUA_THUNDERBIRD_MSGID_UNKNOWN'] = string.format('(%s) & !(%s) & !(%s) & !(%s)', user_agent_thunderbird, mozilla_msgid_common, mozilla_msgid, unusable_msgid) +-- Summary rule for forged Seamonkey Message-ID header +reconf['FORGED_MUA_SEAMONKEY_MSGID'] = string.format('(%s) & (%s) & !(%s) & !(%s)', user_agent_seamonkey, mozilla_msgid_common, mozilla_msgid, unusable_msgid) +reconf['FORGED_MUA_SEAMONKEY_MSGID_UNKNOWN'] = string.format('(%s) & !(%s) & !(%s) & !(%s)', user_agent_seamonkey, mozilla_msgid_common, mozilla_msgid, unusable_msgid) + + +-- Message id validity +local sane_msgid = 'Message-Id=/^<?[^<>\\\\ \\t\\n\\r\\x0b\\x80-\\xff]+\\@[^<>\\\\ \\t\\n\\r\\x0b\\x80-\\xff]+>?\\s*$/H' +local msgid_comment = 'Message-Id=/\\(.*\\)/H' +reconf['INVALID_MSGID'] = string.format('(%s) & !((%s) | (%s))', has_mid, sane_msgid, msgid_comment) + + +-- Only Content-Type header without other MIME headers +local cd = 'header_exists(Content-Disposition)' +local cte = 'header_exists(Content-Transfer-Encoding)' +local ct = 'header_exists(Content-Type)' +local mime_version = 'raw_header_exists(MIME-Version)' +local ct_text_plain = 'content_type_is_type(text) & content_type_is_subtype(plain)' +reconf['MIME_HEADER_CTYPE_ONLY'] = string.format('!(%s) & !(%s) & (%s) & !(%s) & !(%s)', cd, cte, ct, mime_version, ct_text_plain) + + +-- Forged Exchange messages +local msgid_dollars_ok = 'Message-Id=/[0-9a-f]{4,}\\$[0-9a-f]{4,}\\$[0-9a-f]{4,}\\@\\S+/H' +local mimeole_ms = 'X-MimeOLE=/^Produced By Microsoft MimeOLE/H' +local rcvd_with_exchange = 'Received=/with Microsoft Exchange Server/H' +reconf['RATWARE_MS_HASH'] = string.format('(%s) & !(%s) & !(%s)', msgid_dollars_ok, mimeole_ms, rcvd_with_exchange) + +-- Reply-type in content-type +reconf['STOX_REPLY_TYPE'] = 'Content-Type=/text\\/plain; .* reply-type=original/H' + +-- Fake Verizon headers +local fhelo_verizon = 'X-Spam-Relays-Untrusted=/^[^\\]]+ helo=[^ ]+verizon\\.net /iH' +local fhost_verizon = 'X-Spam-Relays-Untrusted=/^[^\\]]+ rdns=[^ ]+verizon\\.net /iH' +reconf['FM_FAKE_HELO_VERIZON'] = string.format('(%s) & !(%s)', fhelo_verizon, fhost_verizon) + +-- Forged yahoo msgid +local at_yahoo_msgid = 'Message-Id=/\\@yahoo\\.com\\b/iH' +local at_yahoogroups_msgid = 'Message-Id=/\\@yahoogroups\\.com\\b/iH' +local from_yahoo_com = 'From=/\\@yahoo\\.com\\b/iH' +reconf['FORGED_MSGID_YAHOO'] = string.format('(%s) & !(%s)', at_yahoo_msgid, from_yahoo_com) +local r_from_yahoo_groups = 'From=/rambler.ru\\@returns\\.groups\\.yahoo\\.com\\b/iH' +local r_from_yahoo_groups_ro = 'From=/ro.ru\\@returns\\.groups\\.yahoo\\.com\\b/iH' + +-- Forged The Bat! MUA headers +local thebat_mua_v1 = 'X-Mailer=/^The Bat! \\(v1\\./H' +local ctype_has_boundary = 'Content-Type=/boundary/iH' +local bat_boundary = 'Content-Type=/boundary=\\"?-{10}/H' +local mailman_21 = 'X-Mailman-Version=/\\d/H' +reconf['FORGED_MUA_THEBAT_BOUN'] = string.format('(%s) & (%s) & !(%s) & !(%s)', thebat_mua_v1, ctype_has_boundary, bat_boundary, mailman_21) + +-- Two received headers with ip addresses +local double_ip_spam_1 = 'Received=/from \\[\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\] by \\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3} with/H' +local double_ip_spam_2 = 'Received=/from\\s+\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\s+by\\s+\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3};/H' +reconf['RCVD_DOUBLE_IP_SPAM'] = string.format('(%s) | (%s)', double_ip_spam_1, double_ip_spam_2) + +-- Quoted reply-to from yahoo (seems to be forged) +local repto_quote = 'Reply-To=/\\".*\\"\\s*\\</H' +local from_yahoo_com = 'From=/\\@yahoo\\.com\\b/iH' +local at_yahoo_msgid = 'Message-Id=/\\@yahoo\\.com\\b/iH' +reconf['REPTO_QUOTE_YAHOO'] = string.format('(%s) & ((%s) | (%s))', repto_quote, from_yahoo_com, at_yahoo_msgid) + +-- MUA definitions +local xm_gnus = 'X-Mailer=/^Gnus v/H' +local xm_msoe5 = 'X-Mailer=/^Microsoft Outlook Express 5/H' +local xm_msoe6 = 'X-Mailer=/^Microsoft Outlook Express 6/H' +local xm_mso12 = 'X-Mailer=/^Microsoft(?: Office Outlook 12\\.0| Outlook 14\\.0)/H' +local xm_cgpmapi = 'X-Mailer=/^CommuniGate Pro MAPI Connector/H' +local xm_moz4 = 'X-Mailer=/^Mozilla 4/H' +local xm_skyri = 'X-Mailer=/^SKYRiXgreen/H' +local xm_wwwmail = 'X-Mailer=/^WWW-Mail \\d/H' +local ua_gnus = 'User-Agent=/^Gnus/H' +local ua_knode = 'User-Agent=/^KNode/H' +local ua_mutt = 'User-Agent=/^Mutt/H' +local ua_pan = 'User-Agent=/^Pan/H' +local ua_xnews = 'User-Agent=/^Xnews/H' +local no_inr_yes_ref = string.format('(%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s)', xm_gnus, xm_msoe5, xm_msoe6, xm_moz4, xm_skyri, xm_wwwmail, ua_gnus, ua_knode, ua_mutt, ua_pan, ua_xnews) +local subj_re = 'Subject=/^R[eE]:/H' +local has_ref = 'header_exists(References)' +local missing_ref = string.format('!(%s)', has_ref) +-- Fake reply (has RE in subject, but has not References header) +reconf['FAKE_REPLY_C'] = string.format('(%s) & (%s) & (%s) & !(%s)', subj_re, missing_ref, no_inr_yes_ref, xm_msoe6) + +-- Mime-OLE is needed but absent (e.g. fake Outlook or fake Ecxchange) +local has_msmail_pri = 'header_exists(X-MSMail-Priority)' +local has_mimeole = 'header_exists(X-MimeOLE)' +local has_squirrelmail_in_mailer = 'X-Mailer=/SquirrelMail\\b/H' +local has_ips_php_in_mailer = 'X-Mailer=/^IPS PHP Mailer/' +reconf['MISSING_MIMEOLE'] = string.format('(%s) & !(%s) & !(%s) & !(%s) & !(%s) & !(%s)', has_msmail_pri, has_mimeole, has_squirrelmail_in_mailer, xm_mso12, xm_cgpmapi, has_ips_php_in_mailer) + +-- Header delimiters +local yandex_from = 'From=/\\@(yandex\\.ru|yandex\\.net|ya\\.ru)/iX' +local yandex_x_envelope_from = 'X-Envelope-From=/\\@(yandex\\.ru|yandex\\.net|ya\\.ru)/iX' +local yandex_return_path = 'Return-Path=/\\@(yandex\\.ru|yandex\\.net|ya\\.ru)/iX' +local yandex_received = 'Received=/^\\s*from \\S+\\.(yandex\\.ru|yandex\\.net)/mH' +local yandex = string.format('(%s) & ((%s) | (%s) | (%s))', yandex_received, yandex_from, yandex_x_envelope_from, yandex_return_path) +-- Tabs as delimiters between header names and header values +function check_header_delimiter_tab(task, header_name) + for _,rh in ipairs(task:get_header_full(header_name)) do + if rh['tab_separated'] then return true end + end + return false +end +reconf['HEADER_FROM_DELIMITER_TAB'] = string.format('(%s) & !(%s)', 'check_header_delimiter_tab(From)', yandex) +reconf['HEADER_TO_DELIMITER_TAB'] = string.format('(%s) & !(%s)', 'check_header_delimiter_tab(To)', yandex) +reconf['HEADER_CC_DELIMITER_TAB'] = string.format('(%s) & !(%s)', 'check_header_delimiter_tab(Cc)', yandex) +reconf['HEADER_REPLYTO_DELIMITER_TAB'] = string.format('(%s) & !(%s)', 'check_header_delimiter_tab(Reply-To)', yandex) +reconf['HEADER_DATE_DELIMITER_TAB'] = string.format('(%s) & !(%s)', 'check_header_delimiter_tab(Date)', yandex) +-- Empty delimiters between header names and header values +function check_header_delimiter_empty(task, header_name) + for _,rh in ipairs(task:get_header_full(header_name)) do + if rh['empty_separator'] then return true end + end + return false +end +reconf['HEADER_FROM_EMPTY_DELIMITER'] = string.format('(%s)', 'check_header_delimiter_empty(From)') +reconf['HEADER_TO_EMPTY_DELIMITER'] = string.format('(%s)', 'check_header_delimiter_empty(To)') +reconf['HEADER_CC_EMPTY_DELIMITER'] = string.format('(%s)', 'check_header_delimiter_empty(Cc)') +reconf['HEADER_REPLYTO_EMPTY_DELIMITER'] = string.format('(%s)', 'check_header_delimiter_empty(Reply-To)') +reconf['HEADER_DATE_EMPTY_DELIMITER'] = string.format('(%s)', 'check_header_delimiter_empty(Date)') + +-- Definitions of received headers regexp +reconf['RCVD_ILLEGAL_CHARS'] = 'Received=/[\\x80-\\xff]/X' + +local MAIL_RU_Return_Path = 'Return-path=/^\\s*<.+\\@mail\\.ru>$/iX' +local MAIL_RU_X_Envelope_From = 'X-Envelope-From=/^\\s*<.+\\@mail\\.ru>$/iX' +local MAIL_RU_From = 'From=/\\@mail\\.ru>?$/iX' +local MAIL_RU_Received = 'Received=/from mail\\.ru \\(/mH' + +reconf['FAKE_RECEIVED_mail_ru'] = string.format('(%s) & !(((%s) | (%s)) & (%s))', MAIL_RU_Received, MAIL_RU_Return_Path, MAIL_RU_X_Envelope_From, MAIL_RU_From) + +local GMAIL_COM_Return_Path = 'Return-path=/^\\s*<.+\\@gmail\\.com>$/iX' +local GMAIL_COM_X_Envelope_From = 'X-Envelope-From=/^\\s*<.+\\@gmail\\.com>$/iX' +local GMAIL_COM_From = 'From=/\\@gmail\\.com>?$/iX' + +local UKR_NET_Return_Path = 'Return-path=/^\\s*<.+\\@ukr\\.net>$/iX' +local UKR_NET_X_Envelope_From = 'X-Envelope-From=/^\\s*<.+\\@ukr\\.net>$/iX' +local UKR_NET_From = 'From=/\\@ukr\\.net>?$/iX' + +local RECEIVED_smtp_yandex_ru_1 = 'Received=/from \\[\\d+\\.\\d+\\.\\d+\\.\\d+\\] \\((port=\\d+ )?helo=smtp\\.yandex\\.ru\\)/iX' +local RECEIVED_smtp_yandex_ru_2 = 'Received=/from \\[UNAVAILABLE\\] \\(\\[\\d+\\.\\d+\\.\\d+\\.\\d+\\]:\\d+ helo=smtp\\.yandex\\.ru\\)/iX' +local RECEIVED_smtp_yandex_ru_3 = 'Received=/from \\S+ \\(\\[\\d+\\.\\d+\\.\\d+\\.\\d+\\]:\\d+ helo=smtp\\.yandex\\.ru\\)/iX' +local RECEIVED_smtp_yandex_ru_4 = 'Received=/from \\[\\d+\\.\\d+\\.\\d+\\.\\d+\\] \\(account \\S+ HELO smtp\\.yandex\\.ru\\)/iX' +local RECEIVED_smtp_yandex_ru_5 = 'Received=/from smtp\\.yandex\\.ru \\(\\[\\d+\\.\\d+\\.\\d+\\.\\d+\\]\\)/iX' +local RECEIVED_smtp_yandex_ru_6 = 'Received=/from smtp\\.yandex\\.ru \\(\\S+ \\[\\d+\\.\\d+\\.\\d+\\.\\d+\\]\\)/iX' +local RECEIVED_smtp_yandex_ru_7 = 'Received=/from \\S+ \\(HELO smtp\\.yandex\\.ru\\) \\(\\S+\\@\\d+\\.\\d+\\.\\d+\\.\\d+\\)/iX' +local RECEIVED_smtp_yandex_ru_8 = 'Received=/from \\S+ \\(HELO smtp\\.yandex\\.ru\\) \\(\\d+\\.\\d+\\.\\d+\\.\\d+\\)/iX' +local RECEIVED_smtp_yandex_ru_9 = 'Received=/from \\S+ \\(\\[\\d+\\.\\d+\\.\\d+\\.\\d+\\] helo=smtp\\.yandex\\.ru\\)/iX' + +reconf['FAKE_RECEIVED_smtp_yandex_ru'] = string.format('(((%s) & ((%s) | (%s))) | ((%s) & ((%s) | (%s))) | ((%s) & ((%s) | (%s)))) & (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s) | (%s)', MAIL_RU_From, MAIL_RU_Return_Path, MAIL_RU_X_Envelope_From, GMAIL_COM_From, GMAIL_COM_Return_Path, GMAIL_COM_X_Envelope_From, UKR_NET_From, UKR_NET_Return_Path, UKR_NET_X_Envelope_From, RECEIVED_smtp_yandex_ru_1, RECEIVED_smtp_yandex_ru_2, RECEIVED_smtp_yandex_ru_3, RECEIVED_smtp_yandex_ru_4, RECEIVED_smtp_yandex_ru_5, RECEIVED_smtp_yandex_ru_6, RECEIVED_smtp_yandex_ru_7, RECEIVED_smtp_yandex_ru_8, RECEIVED_smtp_yandex_ru_9) + +reconf['FORGED_GENERIC_RECEIVED'] = 'Received=/^\\s*(.+\\n)*from \\[\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\] by (([\\w\\d-]+\\.)+[a-zA-Z]{2,6}|\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}); \\w{3}, \\d+ \\w{3} 20\\d\\d \\d\\d\\:\\d\\d\\:\\d\\d [+-]\\d\\d\\d0/X' + +reconf['FORGED_GENERIC_RECEIVED2'] = 'Received=/^\\s*(.+\\n)*from \\[\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\] by ([\\w\\d-]+\\.)+[a-z]{2,6} id [\\w\\d]{12}; \\w{3}, \\d+ \\w{3} 20\\d\\d \\d\\d\\:\\d\\d\\:\\d\\d [+-]\\d\\d\\d0/X' + +reconf['FORGED_GENERIC_RECEIVED3'] = 'Received=/^\\s*(.+\\n)*by \\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3} with SMTP id [a-zA-Z]{14}\\.\\d{13};[\\r\\n\\s]*\\w{3}, \\d+ \\w{3} 20\\d\\d \\d\\d\\:\\d\\d\\:\\d\\d [+-]\\d\\d\\d0 \\(GMT\\)/X' + +reconf['FORGED_GENERIC_RECEIVED4'] = 'Received=/^\\s*(.+\\n)*from localhost by \\S+;\\s+\\w{3}, \\d+ \\w{3} 20\\d\\d \\d\\d\\:\\d\\d\\:\\d\\d [+-]\\d\\d\\d0[\\s\\r\\n]*$/X' + +rspamd_config.FORGED_GENERIC_RECEIVED5 = function (task) + local regexp_text = '^\\s*from \\[(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})\\].*\\n(.+\\n)*\\s*from \\1 by \\S+;\\s+\\w{3}, \\d+ \\w{3} 20\\d\\d \\d\\d\\:\\d\\d\\:\\d\\d [+-]\\d\\d\\d0$' + local re = rspamd_regexp.create_cached(regexp_text, 'i') + local headers_recv = task:get_header_full('Received') + if headers_recv then + for _,header_r in ipairs(headers_recv) do + if re:match(header_r['value']) then + return true + end + end + end + return false +end + +reconf['INVALID_POSTFIX_RECEIVED'] = 'Received=/ \\(Postfix\\) with ESMTP id [A-Z\\d]+([\\s\\r\\n]+for <\\S+?>)?;[\\s\\r\\n]*[A-Z][a-z]{2}, \\d{1,2} [A-Z][a-z]{2} \\d\\d\\d\\d \\d\\d:\\d\\d:\\d\\d [\\+\\-]\\d\\d\\d\\d$/X' + +rspamd_config.INVALID_EXIM_RECEIVED = function (task) + local checked = 0 + local headers_to = task:get_header_full('To') + if headers_to then + local headers_recv = task:get_header_full('Received') + local regexp_text = '^[^\\n]*?<?\\S+?\\@(\\S+)>?\\|.*from \\d+\\.\\d+\\.\\d+\\.\\d+ \\(HELO \\S+\\)[\\s\\r\\n]*by \\1 with esmtp \\(\\S*?[\\?\\@\\(\\)\\s\\.\\+\\*\'\'\\/\\\\,]\\S*\\)[\\s\\r\\n]+id \\S*?[\\)\\(<>\\/\\\\,\\-:=]' + local re = rspamd_regexp.create_cached(regexp_text, 's') + if headers_recv then + for _,header_to in ipairs(headers_to) do + for _,header_r in ipairs(headers_recv) do + if re:match(header_to['value'].."|"..header_r['value']) then + return true + end + end + checked = checked + 1 + if checked > 5 then + -- Stop on 5 rcpt + return false + end + end + end + end + return false +end + +rspamd_config.INVALID_EXIM_RECEIVED2 = function (task) + local checked = 0 + local headers_to = task:get_header_full('To') + if headers_to then + local headers_recv = task:get_header_full('Received') + local regexp_text = '^[^\\n]*?<?\\S+?\\@(\\S+)>?\\|.*from \\d+\\.\\d+\\.\\d+\\.\\d+ \\(HELO \\S+\\)[\\s\\r\\n]*by \\1 with esmtp \\([A-Z]{9,12} [A-Z]{5,6}\\)[\\s\\r\\n]+id [a-zA-Z\\d]{6}-[a-zA-Z\\d]{6}-[a-zA-Z\\d]{2}[\\s\\r\\n]+' + local re = rspamd_regexp.create_cached(regexp_text, 's') + if headers_recv then + for _,header_to in ipairs(headers_to) do + for _,header_r in ipairs(headers_recv) do + if re:match(header_to['value'].."|"..header_r['value']) then + return true + end + end + checked = checked + 1 + if checked > 5 then + -- Stop on 5 rcpt + return false + end + end + end + end + return false +end diff --git a/rules/regexp/lotto.lua b/rules/regexp/lotto.lua new file mode 100644 index 000000000..2c83c1c43 --- /dev/null +++ b/rules/regexp/lotto.lua @@ -0,0 +1,33 @@ +-- Actually these regular expressions were obtained from SpamAssassin project, so they are licensed by apache license: +-- +-- Licensed to the Apache Software Foundation (ASF) under one or more +-- contributor license agreements. See the NOTICE file distributed with +-- this work for additional information regarding copyright ownership. +-- The ASF licenses this file to you under the Apache License, Version 2.0 +-- (the "License"); you may not use this file except in compliance with +-- the License. You may obtain a copy of the License at: +-- +-- http://www.apache.org/licenses/LICENSE-2.0 +-- +-- Unless required by applicable law or agreed to in writing, software +-- distributed under the License is distributed on an "AS IS" BASIS, +-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +-- See the License for the specific language governing permissions and +-- limitations under the License. +-- +-- Rules that are specific for lotto spam messages + +local reconf = config['regexp'] + +local r_lotto_from = 'From=/(?:lottery|News center|congratulation to you|NED INFO|BRITISH NATIONAL HEADQUATERS|MICROSOFT ON LINE SUPPORT TEAM|prize|online notification)/iH' +local r_lotto_subject = 'Subject=/(?:\\xA3\\d|pounds?|FINAL NOTIFICATION|FOR YOUR ATTENTION|File in Your Claims?|ATTN|prize|Claims requirement|amount|confirm|your e-mail address won|congratulations)/iH' +local r_lotto_body = '/(?:won|winning|\\xA3\\d|pounds?|GBP|LOTTERY|awards|prize)/isrP' +local kam_lotto1 = '/(e-?mail address (have emerged a winner|has won|attached to (ticket|reference)|was one of the ten winners)|random selection in our computerized email selection system)/isrP' +local kam_lotto2 = '/((ticket|serial|lucky) number|secret pin ?code|batch number|reference number|promotion date)/isrP' +local kam_lotto3 = '/(won|claim|cash prize|pounds? sterling)/isrP' +local kam_lotto4 = '/(claims (officer|agent)|lottery coordinator|fiduciary (officer|agent)|fiduaciary claims)/isrP' +local kam_lotto5 = '/(freelotto group|Royal Heritage Lottery|UK National (Online)? Lottery|U\\.?K\\.? Grand Promotions|Lottery Department UK|Euromillion Loteria|Luckyday International Lottery|International Lottery)/isrP' +local kam_lotto6 = '/(Dear Lucky Winner|Winning Notification|Attention:Winner|Dear Winner)/isrP' +local kam_lotto7 = 'Subject=/(Your Lucky Day|(Attention:|ONLINE) WINNER)/iH' +reconf['R_LOTTO'] = string.format('((%s) | (%s) | (%s)) & (((%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s) + (%s)) >= 3)', reconf['R_UNDISC_RCPT'], reconf['R_BAD_CTE_7BIT'], reconf['R_NO_SPACE_IN_FROM'], r_lotto_from, r_lotto_subject, r_lotto_body, kam_lotto1, kam_lotto2, kam_lotto3, kam_lotto4, kam_lotto5, kam_lotto6) + diff --git a/rules/rspamd.classifiers.lua b/rules/rspamd.classifiers.lua new file mode 100644 index 000000000..b9be222f9 --- /dev/null +++ b/rules/rspamd.classifiers.lua @@ -0,0 +1,144 @@ +--[[ +Copyright (c) 2011-2015, Vsevolod Stakhov <vsevolod@highsecure.ru> +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this +list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright notice, +this list of conditions and the following disclaimer in the documentation +and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +]]-- + +-- Detect language of message and selects appropriate statfiles for it + +-- Common labels for specific statfiles +local many_recipients_label = 'many recipients' +local undisclosed_recipients_label = 'undisclosed recipients' +local list_label = 'maillist' +local long_subject_label = 'long subject' + +-- Get specific statfiles set based on message rules +local function get_specific_statfiles(classifier, task) + if not table.foreach then + table.foreach = function(t, f) + for k, v in pairs(t) do f(k, v) end + end + end + local spec_st = {} + -- More 5 recipients + local st_many = classifier:get_statfile_by_label(many_recipients_label) + if st_many then + rcpt = task:get_recipients(2) + if rcpt and table.maxn(rcpt) > 5 then + print(table.maxn(rcpt)) + table.foreach(st_many, function(i,v) table.insert(spec_st,v) end) + end + end + -- Undisclosed + local st_undisc = classifier:get_statfile_by_label(undisclosed_recipients_label) + if st_undisc then + rcpt = task:get_recipients(2) + if rcpt and table.maxn(rcpt) == 0 then + table.foreach(st_undisc, function(i,v) table.insert(spec_st,v) end) + end + end + -- Maillist + local st_maillist = classifier:get_statfile_by_label(list_label) + if st_maillist then + local unsub_header = task:get_header_raw('List-Unsubscribe') + if unsub_header then + table.foreach(st_maillist, function(i,v) table.insert(spec_st,v) end) + end + end + -- Long subject + local st_longsubj = classifier:get_statfile_by_label(long_subject_label) + if st_longsubj then + local subj = task:get_header_raw('Subject') + if subj and string.len(subj) > 150 then + table.foreach(st_longsubj, function(i,v) table.insert(spec_st,v) end) + end + end + + if table.maxn(spec_st) > 1 then + return spec_st + else + return nil + end +end + +classifiers['bayes'] = function(classifier, task, is_learn, is_spam) + -- Subfunction for detection of message's language + local detect_language = function(task) + local parts = task:get_text_parts() + for _,p in ipairs(parts) do + local l = p:get_language() + if l then + return l + end + end + return nil + end + + -- Main procedure + local selected = {} + local spec_st = get_specific_statfiles(classifier, task) + if spec_st then + if is_learn then + return spec_st + else + -- Merge tables + table.foreach(spec_st, function(i,v) table.insert(selected,v) end) + end + end + -- Detect statfile by language + language = detect_language(task) + if language then + -- Find statfiles with specified language + for _,st in ipairs(classifier:get_statfiles()) do + -- Skip labeled statfiles + if not st:get_label() then + local st_l = st:get_param('language') + if st_l and st_l == language then + -- Insert statfile with specified language + table.insert(selected, st) + end + end + end + if table.maxn(selected) > 1 then + return selected + end + end + + -- Language not detected or specific language statfiles have not been found + for _,st in ipairs(classifier:get_statfiles()) do + -- Skip labeled statfiles + if not st:get_label() then + local st_l = st:get_param('language') + -- Insert only statfiles without language + if not st_l then + table.insert(selected, st) + end + end + end + if table.maxn(selected) > 1 then + return selected + end + + return nil +end + diff --git a/rules/rspamd.lua b/rules/rspamd.lua new file mode 100644 index 000000000..ce2edd2b3 --- /dev/null +++ b/rules/rspamd.lua @@ -0,0 +1,120 @@ +--[[ +Copyright (c) 2011-2015, Vsevolod Stakhov <vsevolod@highsecure.ru> +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this +list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright notice, +this list of conditions and the following disclaimer in the documentation +and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +]]-- + +-- This is main lua config file for rspamd + +config['regexp'] = {} + +dofile('regexp/headers.lua') +dofile('regexp/lotto.lua') +dofile('regexp/fraud.lua') +dofile('regexp/drugs.lua') +dofile('html.lua') + +local reconf = config['regexp'] +local util = require "rspamd_util" + +-- Uncategorized rules + +-- Local rules +local r_bgcolor = '/BGCOLOR=/iP' +local r_font_color = '/font color=[\\"\']?\\#FFFFFF[\\"\']?/iP' +reconf['R_WHITE_ON_WHITE'] = string.format('(!(%s) & (%s))', r_bgcolor, r_font_color) +reconf['R_FLASH_REDIR_IMGSHACK'] = '/^(?:http:\\/\\/)?img\\d{1,5}\\.imageshack\\.us\\/\\S+\\.swf/U' + +-- Different text parts +rspamd_config.R_PARTS_DIFFER = function(task) + local distance = task:get_mempool():get_variable('parts_distance', 'int') + + if distance then + local nd = tonumber(distance) + + if nd < 50 then + local score = 1 - util.tanh(nd / 100.0) + + task:insert_result('R_PARTS_DIFFER', score, tostring(nd) .. '%') + end + end + + return false +end + +-- Date issues +rspamd_config.MISSING_DATE = function(task) + if rspamd_config:get_api_version() >= 5 then + if not task:get_header_raw('Date') then + return true + end + end + + return false +end +rspamd_config.DATE_IN_FUTURE = function(task) + if rspamd_config:get_api_version() >= 5 then + local dm = task:get_date{format = 'message'} + local dt = task:get_date{format = 'connect'} + -- An 2 hour + if dm > 0 and dm - dt > 7200 then + return true + end + end + + return false +end +rspamd_config.DATE_IN_PAST = function(task) + if rspamd_config:get_api_version() >= 5 then + local dm = task:get_date{format = 'message', gmt = true} + local dt = task:get_date{format = 'connect', gmt = true} + -- A day + if dm > 0 and dt - dm > 86400 then + return true + end + end + + return false +end + +local function file_exists(filename) + local file = io.open(filename) + if file then + io.close(file) + return true + else + return false + end +end + +if file_exists('hfilter.lua') then + dofile('hfilter.lua') +end + +if file_exists('rspamd.local.lua') then + dofile('rspamd.local.lua') +end + +if file_exists('rspamd.classifiers.lua') then + dofile('rspamd.classifiers.lua') +end |