Malicious PDF — malware analysis report

Static analysis result for SHA-256 91edc78c43df5533…

MALICIOUS

PDF

83.6 KB Created: 2021-01-08 08:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bceddf0a4f85889cb3cf5f5a4b818ea1 SHA-1: 42c2b7e8c5c17778428ebdd8845f6fbd2e3348c3 SHA-256: 91edc78c43df55334530d41e5bfa6b66fd9654a8cc24303a0cb1fbe78b7d0c26
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. The ClamAV detection and ML classifier further indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs suggests potential for further malicious activity, possibly through embedded JavaScript or other exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8484

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=app+like+chatterpix+for+android
    • https://cdn.sqhk.co/vusutazomaga/dNijhbi/raiden_legacy_pc_cheats.pdf
    • https://static.s123-cdn-static.com/uploads/4410027/normal_5fc470f8f3830.pdf
    • https://cdn.sqhk.co/kurafuso/Lhc4hfn/nhl_games_live_today.pdf
    • https://xezinaruwi.weebly.com/uploads/1/3/4/4/134479948/witifutovufoz_xirirunegadig_pifadalusiwig.pdf
    • https://cdn.sqhk.co/pevukoza/2pjjHjc/best_buy_laptops_cyber_monday.pdf
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/06665.pdf
    • https://cdn-cms.f-static.net/uploads/4386095/normal_5f9ce21e6f3f8.pdf
    • https://cdn.sqhk.co/detateseb/IhdicnA/panozafilufe.pdf
    • https://wasutemup.weebly.com/uploads/1/3/4/6/134651280/6124093.pdf
    • https://s3.amazonaws.com/baxadelefofibuz/90556839112.pdf
    • https://s3.amazonaws.com/pokixovuxik/guzanajigemogi.pdf

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