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

Tue Nov 14 10:20:00 UTC 2017

Hello,

based on my working whitelist regex i would say the 2nd part should not 
look only for amazon\.com

If i understood it the correct way it should be something like:

X:.+\.amazon\.(at|ca|co\.uk|co\.jp|com|de|fr)([/?].*)?:.+\.amazon\.(com|de)([/?].*)?

Using this regex shows a clean mail. May be more extensions are needed 
on right side, dependent on amazon changes/uses on different domains.

Thanks,
Hajo

Am 14.11.2017 um 10:50 schrieb Al Varnell:
> On Tue, Nov 14, 2017 at 01:48 AM, Hajo Locke wrote:
>> Hello,
>>
>>
>> Am 14.11.2017 um 10:44 schrieb Al Varnell:
>>> I'm not very good at regex, but I'm surprised that this current X record doesn't already take care of this:
>>>
>>> X:.+\.amazon\.(at|ca|co\.uk|co\.jp|com|de|fr)([/?].*)?:.+\.amazon\.com([/?].*)?
>> me too. in which file is this regex located?
> daily.cld / .cvd
>
> -Al-
>
>>> -Al-
>>>
>>> On Tue, Nov 14, 2017 at 01:19 AM, Hajo Locke wrote:
>>>> 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- <https://sellercentral-europe.amazon.com-/> <https://sellercentral-europe.amazon.com-/ <https://sellercentral-europe.amazon.com-/>>>http://www.amazon.de <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>
>>>> LibClamAV debug: Phishing: looking up in whitelist: https://sellercentral-europe.amazon.com:http://www.amazon.de <https://sellercentral-europe.amazon.com:http://www.amazon.de> <https://sellercentral-europe.amazon.com:http://www.amazon.de <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/ <https://sellercentral-europe.amazon.com:http://www.amazon.de/> <https://sellercentral-europe.amazon.com:http://www.amazon.de/ <https://sellercentral-europe.amazon.com:http://www.amazon.de/>>
>>>> LibClamAV debug: Lookup result: not in regex list
>>>> LibClamAV debug: Phishcheck:host:.www.amazon.de <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>
>>>> LibClamAV debug: Looking up in regex_list: www.amazon.de/ <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>
>>>> LibClamAV debug: calc_pos_with_skip: skip:15, 7 - 20 "http://www.amazon.de <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>","www.amazon.de/ <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>"
>>>> LibClamAV debug: calc_pos_with_skip:
>>>> LibClamAV debug: calc_pos_with_skip: skip:4, 7 - 20 "http://www.amazon.de <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>","www.amazon.de/ <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>"
>>>> LibClamAV debug: calc_pos_with_skip:amazon.de <http://amazon.de/> <http://amazon.de/ <http://amazon.de/>>
>>>> LibClamAV debug: Got a match: www.amazon.de/ <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>> with /ed.nozama
>>>> LibClamAV debug: Before inserting .: .www.amazon.de <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>
>>>> LibClamAV debug: Lookup result: in regex list
>>>> LibClamAV debug: Phishcheck:host:.sellercentral-europe.amazon.com <http://sellercentral-europe.amazon.com/> <http://sellercentral-europe.amazon.com/ <http://sellercentral-europe.amazon.com/>>
>>>> LibClamAV debug: Phishing: looking up in whitelist: .sellercentral-europe.amazon.com <http://sellercentral-europe.amazon.com/> <http://sellercentral-europe.amazon.com/ <http://sellercentral-europe.amazon.com/>>:.www.amazon.de <http://www.amazon.de/> <http://www.amazon.de/ <http://www.amazon.de/>>; host-only:1
>>>> LibClamAV debug: Looking up in regex_list: sellercentral-europe.amazon.com <http://sellercentral-europe.amazon.com/> <http://sellercentral-europe.amazon.com/ <http://sellercentral-europe.amazon.com/>>:www.amazon.de/ <http://www.amazon.de/> <http://www.amazon.de/ <http://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 <https://sellercentral-europe.amazon.com/nms/redirect> <https://sellercentral-europe.amazon.com/nms/redirect <https://sellercentral-europe.amazon.com/nms/redirect>>..... which redirects to http://www.amazon.de/gp/help/survey?p <http://www.amazon.de/gp/help/survey?p> <http://www.amazon.de/gp/help/survey?p <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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>>>>
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>>>>
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> -Al-
>
>
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