Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8b726f83e8b97d…

MALICIOUS

PDF

37.6 KB Created: 2021-07-08 06:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b3ececf575ed9841c24cfe37c778a9a3 SHA-1: b04d7d42846185918cae30f105e8397b099ca398 SHA-256: 2f8b726f83e8b97d7e23d88fada283ab61beb385f869a1fc6078f1e4b2c1cf0c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. The heuristic PDF_IMAGE_LURE indicates it likely contains a screenshot disguised as content, with a hidden clickable action pointing to external URLs. Several URLs were extracted, many hosted on compromised WordPress sites, suggesting a campaign to distribute malicious content or redirect users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7998

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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://medvor.ru/uplcv?utm_term=find+your+arcana PDF link annotation
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3ef6a698e---kitaleta.pdfIn PDF document text
    • http://phongkhamthienhoa.vn/images/files/60344692350.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/223d5016ab998f59e0948b6ec995957c/vamas.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b8cd719f5---bafexolawiselobosovu.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/f5840b4af2c89c96827f1274a8b66538/tadanegokufoxorevepimi.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16076227b5c8a4---49206228903.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/79b1a433e81ed476ae9bf5dff0176abb/zijufuxudalepojimo.pdfIn PDF document text
    • http://digivideos.net/ckfinder/userfiles/files/sigapafi.pdfIn PDF document text

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