Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dedc0bfb96c262d…

MALICIOUS

PDF

54.0 KB Created: 2021-08-08 12:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 89b183d71cd486d2a9205491583c2d1f SHA-1: 57a5789f18570d90f21581d406dc1eae5a29dba8 SHA-256: 2dedc0bfb96c262d18c32caa31328b96e13ad94fa6d165673d2bce5af7f08bf0
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. It contains multiple external URIs and links pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics indicate that this PDF is likely used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4356

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://huntic.ru/uplcv?utm_term=modern+cuisine+book+pdf PDF link annotation
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/efac8fb8274e4030db7cbf0b03d5bb06/watul.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/212b59d0e7e29fa9cfbb571949a230b2/duripedetejurutevalugudom.pdfIn PDF document text
    • http://markone-tools.com/upload/files/86660755989.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/k7hgtej0r2c6n52oul3lgp9od1/lupitip.pdfIn PDF document text
    • https://apskarota.org/userfiles/file/xolilavekowubudewokamaru.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/duno3u5651gison2q4tlg71b01/sarujag.pdfIn PDF document text

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