Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e99f2651a99c51…

MALICIOUS

PDF

83.6 KB Created: 2021-01-01 14:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc44cf1a02c58737f15e61d00acedeae SHA-1: d2d6ecbef57c194a86ed77abff3256dd3a18fd55 SHA-256: 69e99f2651a99c51add7ee7f2c6ffc94cf971d06c82d46853f0537cb2f3cb28c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO abuse for malicious purposes. The ClamAV detection and ML classifier strongly indicate malicious content, likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9458

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=japanese+characters+chart+pdf
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/0a1b7da.pdf
    • https://cdn.sqhk.co/jedelamodafa/dyhjlhc/wavekubesokijevuzizo.pdf
    • https://cdn-cms.f-static.net/uploads/4443821/normal_5fb6d53730510.pdf
    • https://cdn.sqhk.co/joxomawezu/igiuVNu/times_square_ball_drop_2020_tickets.pdf
    • https://numuzobiw.weebly.com/uploads/1/3/4/5/134589566/5165606.pdf
    • https://cdn.sqhk.co/jibenapola/hbgjGiT/flying_car_robot_3d_game.pdf
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/lozogawi-depejixaputopiv-guboboruwamasus.pdf
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fd76f481e7f6.pdf
    • https://munevamowiwefan.weebly.com/uploads/1/3/4/4/134440094/zinexigamodeped_kofarosag_kobipotojenuk.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.pdf
    • https://lefilima.weebly.com/uploads/1/3/0/7/130775934/derepadodosis.pdf
    • https://cdn.sqhk.co/fekawifen/Xhfjdii/kijidewopemedimixibanul.pdf
    • https://cdn.sqhk.co/bavisimupux/AhfjeF7/jagosixavotulakuwojidaz.pdf
    • https://uploads.strikinglycdn.com/files/751e93e6-ac91-4a05-ba6f-9a25ce329f53/nobutatapejirarotovutuwa.pdf
    • https://uploads.strikinglycdn.com/files/b53a33e4-5b6e-4e0f-93cc-3717bd424502/42635456196.pdf
    • https://uploads.strikinglycdn.com/files/5e1d42b5-f3dc-437d-b642-71d7c83c2fb8/vafixukubo.pdf

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