[clamav-users] FP Heuristics.Phishing.Email.SpoofedDomain with amazon

Hajo Locke Hajo.Locke at gmx.de
Tue Nov 14 09:19:59 UTC 2017


Hello List,

i think i found an fp in incoming mail.  I cant submit mail as FP on 
website, because it contains private data.
I can provide debug output which leads to match:

LibClamAV debug: Phishcheck:URL after cleanup: 
https://sellercentral-europe.amazon.com->http://www.amazon.de
LibClamAV debug: Phishing: looking up in whitelist: 
https://sellercentral-europe.amazon.com:http://www.amazon.de; host-only:0
LibClamAV debug: Looking up in regex_list: 
https://sellercentral-europe.amazon.com:http://www.amazon.de/
LibClamAV debug: Lookup result: not in regex list
LibClamAV debug: Phishcheck:host:.www.amazon.de
LibClamAV debug: Looking up in regex_list: www.amazon.de/
LibClamAV debug: calc_pos_with_skip: skip:15, 7 - 20 
"http://www.amazon.de","www.amazon.de/"
LibClamAV debug: calc_pos_with_skip:
LibClamAV debug: calc_pos_with_skip: skip:4, 7 - 20 
"http://www.amazon.de","www.amazon.de/"
LibClamAV debug: calc_pos_with_skip:amazon.de
LibClamAV debug: Got a match: www.amazon.de/ with /ed.nozama
LibClamAV debug: Before inserting .: .www.amazon.de
LibClamAV debug: Lookup result: in regex list
LibClamAV debug: Phishcheck:host:.sellercentral-europe.amazon.com
LibClamAV debug: Phishing: looking up in whitelist: 
.sellercentral-europe.amazon.com:.www.amazon.de; host-only:1
LibClamAV debug: Looking up in regex_list: 
sellercentral-europe.amazon.com:www.amazon.de/
LibClamAV debug: Lookup result: not in regex list
LibClamAV debug: Phishcheck: Phishing scan result: URLs are way too 
different
LibClamAV debug: found Possibly Unwanted: 
Heuristics.Phishing.Email.SpoofedDomain

Mail contains a link 
https://sellercentral-europe.amazon.com/nms/redirect..... which 
redirects to http://www.amazon.de/gp/help/survey?p....
These are default links from amazon to rate seller/product and should be 
an allowed combination of redirects.
It is possible to do a global update of this combination within heuristics?
Otherwise i had to whitelist by wdb file:

X:.+sellercentral-europe\.amazon\.com:.+amazon\.de

Thanks,
Hajo





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