Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26e5981ef7192d0…

MALICIOUS

PDF

95.4 KB Created: 2021-06-04 02:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a41eaa7ad90c2e3e86f10246e1073e87 SHA-1: 29de9ff54d632a5130a31baa62871145e9272a01 SHA-256: d26e5981ef7192d08133197cacec6445762da399097bfcbc30f6179e2dbd6b5c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to PDF files, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6937

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://archism.ru/pbw?utm_term=financial+accounting+ifrs+3rd+edition+solution+chapter+2
    • https://cdn-cms.f-static.net/uploads/4495681/normal_602837b8a3b64.pdf
    • https://static.s123-cdn-static.com/uploads/4392649/normal_6005073e498db.pdf
    • https://cdn-cms.f-static.net/uploads/4446496/normal_600e017e6d5a4.pdf
    • https://static.s123-cdn-static.com/uploads/4417652/normal_5ff19659ec40d.pdf
    • https://static.s123-cdn-static.com/uploads/4404122/normal_5fcf3e3c2eac5.pdf
    • https://cdn-cms.f-static.net/uploads/4404520/normal_5fd2d8329e28e.pdf
    • https://cdn-cms.f-static.net/uploads/4500668/normal_60472fd2b5306.pdf
    • https://cdn-cms.f-static.net/uploads/4489245/normal_602b434bbeae1.pdf
    • https://rasofenetiko.weebly.com/uploads/1/3/4/8/134862321/besedufuzi_porazori.pdf
    • https://folimigoti.weebly.com/uploads/1/3/4/8/134873615/lojunesadopobid_zebuluzukake_kesod.pdf
    • https://static.s123-cdn-static.com/uploads/4453575/normal_5ff56944bdd99.pdf
    • https://cdn-cms.f-static.net/uploads/4488574/normal_606b0d0269748.pdf
    • http://figinav.pbworks.com/f/madina_book_1_notes.pdf
    • http://mizelabe.pbworks.com/f/how_to_chick_fil_a_rewards_work.pdf
    • http://sowenux.pbworks.com/f/cryptography_and_network_security_by_william_stallings_3rd_edition_ppt.pdf
    • http://podixarutib.pbworks.com/w/file/fetch/144451920/how_to_reset_hisense_smart_tv.pdf
    • http://pezaloribed.pbworks.com/f/biodata_format_for_marriage_in_marathi_free_download.pdf
    • http://gazoridixilu.pbworks.com/f/silonozuvotodan.pdf
    • http://sepaxebi.pbworks.com/w/file/fetch/144418728/how_do_i_install_mobdro_on_amazon_fire_stick.pdf

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