Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc7d60ac02d7357…

MALICIOUS

PDF

52.6 KB Created: 2021-03-21 23:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d66c34862598daf533a5e7dcc2a172bd SHA-1: 7b0d7d5ad22f3f313e22a662b1f7fff369007f5c SHA-256: 1cc7d60ac02d7357d2349896b3467f2753bfd85bf2aba6d6ed7ffc519bd6ccbf
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7510

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jacksth.ru/aws?utm_term=asus+rt-n66u+default+login PDF link annotation
    • https://cdn.sqhk.co/rudolikube/egiNmOX/5507611619.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/jiyidzg/japafi.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/ieaQgfj/26863914328.pdfIn PDF document text
    • https://cdn.sqhk.co/muzewutipifa/kt8G7eC/42540119633.pdfIn PDF document text
    • http://cardio-active.site/how_to_open_my_own_retail_storexu91h.pdfIn PDF document text
    • http://merovew.xyz/rijupofo7sdl0.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/how_do_i_get_my_sony_tv_off_standbyazo9z.pdfIn PDF document text
    • http://tumbochka.space/abu_shuja_englishvptzd.pdfIn PDF document text
    • http://menbp.online/pit_people_tier_list43wgg.pdfIn PDF document text
    • https://cdn.sqhk.co/lalamiteliw/EjhihcJ/57152950781.pdfIn PDF document text
    • http://sq11mini.com/45684839839nvt65.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3ce31fe-9e9a-43f3-a749-20e0ea3389ed/latirunalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ae830a-9c81-4fec-908a-d481dc26b91c/what_is_the_role_of_a_foster_carer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fbc623b-de56-40b6-9d22-4167e9ca2dfb/kupepedodawab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffbe573b-25d0-4b52-81ba-00343f5ab328/autocad_map_3d_polyline_to_2d.pdfIn PDF document text
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_749f38bb635a4b89a0aebf1f294afbe5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/46953677-31f1-4f9e-a539-3ee6ebc126f7/324190309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/639a58e1-7f6c-4e47-aaf8-1b8363e1a419/the_outsider_stephen_king_summary.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_47b40ca27d8b4d009a16588a4e9a823b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d98deb49-4212-4111-a1d9-649f1c6536c7/gartner_s_duct_cyst_radiology.pdfIn PDF document text