Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8f2f561eed69fb…

MALICIOUS

PDF

47.6 KB Created: 2021-08-29 03:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: acbd59598474b721d7e72f87fa716013 SHA-1: 2326060e63a4d152eabd3b3d47f91e354da5bed7 SHA-256: 1e8f2f561eed69fbbb4435bff60fa9cb3ae1704907408c76ac929005f12b0041
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains multiple links to external resources, many of which point to compromised WordPress sites hosting PDF files. ClamAV detected this as a phishing trojan, and the presence of numerous links to potentially malicious PDFs suggests an attempt to trick users into downloading further malware. No scripts were extracted, but the overall pattern indicates a phishing lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.2293

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081a4c896183---45093211189.pdf
    • https://austdoorcaocap.com/upload/files/xegabo.pdf
    • https://stdtekstil.com/upload/ckfinder/files/56164933615.pdf
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/781cb0f8f87995e1d4c9ce197b9cdecb/59073668189.pdf
    • https://soudurelausiere.ca/upload/editor/file/xiraparikofugapujijop.pdf
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160935b07db887---palox.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+cite+an+article+example

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