/usr/share/perl5/Mail/SpamAssassin/Plugin/Phishing.pm is in spamassassin 3.4.2-1~deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | #
# Author: Giovanni Bechis <gbechis@apache.org>
# Copyright 2018 Giovanni Bechis
#
# <@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.
# </@LICENSE>
#
=head1 NAME
Mail::SpamAssassin::Plugin::Phishing - check uris against phishing feed
=head1 SYNOPSIS
loadplugin Mail::SpamAssassin::Plugin::Phishing
ifplugin Mail::SpamAssassin::Plugin::Phishing
phishing_openphish_feed /etc/mail/spamassassin/openphish-feed.txt
phishing_phishtank_feed /etc/mail/spamassassin/phishtank-feed.csv
body URI_PHISHING eval:check_phishing()
describe URI_PHISHING Url match phishing in feed
endif
=head1 DESCRIPTION
This plugin finds uris used in phishing campaigns detected by
OpenPhish or PhishTank feeds.
The Openphish free feed is updated every 6 hours and can be downloaded from
https://openphish.com/feed.txt.
The Premium Openphish feed is not currently supported.
The PhishTank free feed is updated every 1 hours and can be downloaded from
http://data.phishtank.com/data/online-valid.csv.
To avoid download limits a registration is required.
=cut
package Mail::SpamAssassin::Plugin::Phishing;
use strict;
use warnings;
my $VERSION = 1.0;
use Errno qw(EBADF);
use Mail::SpamAssassin::Plugin;
use Mail::SpamAssassin::PerMsgStatus;
our @ISA = qw(Mail::SpamAssassin::Plugin);
sub dbg { Mail::SpamAssassin::Plugin::dbg ("Phishing: @_"); }
sub new {
my ($class, $mailsa) = @_;
$class = ref($class) || $class;
my $self = $class->SUPER::new($mailsa);
bless ($self, $class);
$self->set_config($mailsa->{conf});
$self->register_eval_rule("check_phishing");
return $self;
}
sub set_config {
my ($self, $conf) = @_;
my @cmds;
push(@cmds, {
setting => 'phishing_openphish_feed',
type => $Mail::SpamAssassin::Conf::CONF_TYPE_STRING,
}
);
push(@cmds, {
setting => 'phishing_phishtank_feed',
type => $Mail::SpamAssassin::Conf::CONF_TYPE_STRING,
}
);
$conf->{parser}->register_commands(\@cmds);
}
#prepare the plugin
sub check_start{
my ($self, $params) = @_;
my $pms = $params->{permsgstatus};
#initialize the PHISHING data structure for
#saving configuration information
$pms->{PHISHING} = {};
$pms->{PHISHING}->{phishurl} = [];
$pms->{PHISHING}->{phishdomain} = [];
$pms->{PHISHING}->{phishinfo} = {};
#read the configuration info
$self->_read_configfile($params);
}
sub _read_configfile {
my ($self, $params) = @_;
my $pms = $params->{permsgstatus};
my @phtank_ln;
local *F;
if ( defined($pms->{conf}->{phishing_openphish_feed}) && ( -f $pms->{conf}->{phishing_openphish_feed} ) ) {
open(F, '<', $pms->{conf}->{phishing_openphish_feed});
for ($!=0; <F>; $!=0) {
chomp;
#lines that start with pound are comments
next if(/^\s*\#/);
my $phishdomain = $self->{main}->{registryboundaries}->uri_to_domain($_);
if ( defined $phishdomain ) {
push @{$pms->{PHISHING}->{phishurl}}, $_;
push @{$pms->{PHISHING}->{phishdomain}}, $phishdomain;
push @{$pms->{PHISHING}->{phishinfo}->{$phishdomain}}, "OpenPhish";
}
}
defined $_ || $!==0 or
$!==EBADF ? dbg("PHISHING: error reading config file: $!")
: die "error reading config file: $!";
close(F) or die "error closing config file: $!";
}
if ( defined($pms->{conf}->{phishing_phishtank_feed}) && (-f $pms->{conf}->{phishing_phishtank_feed} ) ) {
open(F, '<', $pms->{conf}->{phishing_phishtank_feed});
for ($!=0; <F>; $!=0) {
#skip first line
next if ( $. eq 1);
chomp;
#lines that start with pound are comments
next if(/^\s*\#/);
@phtank_ln = split(/,/, $_);
# XXX Exclude a Phishing category
#
# Count commas to get last field
# my $cnt_comma = ($_ =~ tr/\,//);
# next if( $phtank_ln[$cnt_comma] eq "Other" );
$phtank_ln[1] =~ s/\"//g;
my $phishdomain = $self->{main}->{registryboundaries}->uri_to_domain($phtank_ln[1]);
if ( defined $phishdomain ) {
push @{$pms->{PHISHING}->{phishurl}}, $phtank_ln[1];
push @{$pms->{PHISHING}->{phishdomain}}, $phishdomain;
push @{$pms->{PHISHING}->{phishinfo}->{$phishdomain}}, "PhishTank";
}
}
defined $_ || $!==0 or
$!==EBADF ? dbg("PHISHING: error reading config file: $!")
: die "error reading config file: $!";
close(F) or die "error closing config file: $!";
}
}
sub check_phishing {
my ($self, $pms) = @_;
my $desc;
my $feedname;
my $domain;
my $uris = $pms->get_uri_detail_list();
my $rulename = $pms->get_current_eval_rule_name();
if (defined $pms->{conf}->{descriptions}->{$rulename}) {
$desc = $pms->{conf}->{descriptions}->{$rulename};
}
while (my($uri, $info) = each %{$uris}) {
# we want to skip mailto: uris
next if ($uri =~ /^mailto:/i);
# no hosts/domains were found via this uri, so skip
next unless ($info->{hosts});
if (($info->{types}->{a}) || ($info->{types}->{parsed})) {
# check url
foreach my $cluri (@{$info->{cleaned}}) {
if (length $cluri) {
if ( grep { $cluri eq $_ } @{$pms->{PHISHING}->{phishurl}} ) {
$domain = $self->{main}->{registryboundaries}->uri_to_domain($cluri);
$feedname = $pms->{PHISHING}->{phishinfo}->{$domain}[0];
dbg("HIT! $domain [$cluri] found in $feedname feed");
$pms->got_hit($rulename, "", description => $desc . " $feedname ($domain)", ruletype => 'eval');
return 1;
}
}
}
}
}
return 0;
}
1;
|