Malicious PDF — malware analysis report

Static analysis result for SHA-256 199b4bc5b2a863d8…

MALICIOUS

PDF

61.9 KB Created: 2021-06-19 02:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 476970e8dccf335b9f9ead7713d7a35b SHA-1: 79ad04065c6a99354d037ec7eea205f7bc8939c9 SHA-256: 199b4bc5b2a863d8a1980ecd1415670333eedd4ac8886cb8d77af5170ea27e62
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV, specifically as a phishing trojan. It contains embedded URLs that point to external PDF files, suggesting a potential download or redirection mechanism. The document body, though heavily obfuscated, contains text related to educational materials, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.1187

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/1fbac57abe3fe0a8ef6f2d4dcc90d38f/95428618613.pdf In PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa09c56b32---sukukedepisiwuxawoninoge.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=harcourt+spelling+practice+book+grade+3+answer+keyPDF link annotation

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