Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd325bc0e22a3d4a…

MALICIOUS

PDF

181.9 KB Created: 2021-08-15 04:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d87dd1a27c54b66578c10c9a7801e647 SHA-1: 10a0f132057c57940f328e626b4449532c9f4444 SHA-256: cd325bc0e22a3d4ad9a1142970addcbb96f6d55e2be7481c45697bda866f5481
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains external URIs and links pointing to compromised WordPress upload storage, suggesting it's used to distribute or lure victims to malicious content. The presence of embedded URLs and the nature of the detected threat (Pdf.Phishing.Trojan) strongly suggest a phishing or malware delivery campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7903

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=revue+technique+tractopelle+mf+50a PDF link annotation
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b882bf01d9---setow.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708c8c923ac---72046551793.pdfIn PDF document text
    • http://assytekservizi.com/userfiles/files/luvajopozipakekapo.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bb20c2b269a---93945282649.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/9tbvpgtkl7o5or886mrql7224t/nuzemapogaxadev.pdfIn PDF document text

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