Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb317cb8f969867e…

MALICIOUS

PDF

38.0 KB Created: 2021-05-22 00:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80fceff83c554e706389e1336e3583b3 SHA-1: 6a06cdc018fe7f38de559bf3b213c9b873267f31 SHA-256: cb317cb8f969867e677d503c60e1933382f41917e0a0a5170b9cfeabcb83d8b0
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a single image and minimal text, typical of a screenshot designed to conceal clickable links. Multiple URLs pointing to compromised WordPress sites and other domains were extracted, suggesting a distribution network for malicious content. The document body, though heavily obfuscated, contains metadata related to its creation, but no explicit script content was found to detail further execution steps.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9243

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://allytemp.ru/uplcv?utm_term=janam+kundali+software+in+gujarati+free+download
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/drdhsjimabrs1r5jef7hs2ea72/wojuxi.pdf
    • https://amd-export.com/site/upload/file/90099207565.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160769e8f59970---wunuxetaru.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a545b1d3eac---tasaxutiwalegurenuzete.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b57554401e---66481984668.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/da8tb88tgi861k04nffrq09cla/52872418024.pdf
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092b7dbd812e---toruxab.pdf
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/4ed9e57f8c4ada8ae3c3c6a1e12392a1/jesosarukeriregotemim.pdf
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/c8a295e96e2fc347f3f534ad2a7a3430/13747045408.pdf

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