Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e8e71e652149ed…

MALICIOUS

PDF

47.6 KB Created: 2021-08-18 03:03:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 41375e18a041be84c8acc380fecaccd1 SHA-1: 2a1e5d40b48ce2e4dcbda6d185eb1e636a3116a7 SHA-256: c4e8e71e652149ed0ee7d3cc62bfcd490b83929da0cf12f1c41249e207bd2381
64 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 an embedded URI that points to a URL which, while flagged as benign by the URL reputation service, is suspicious given the malware detection. The PDF structure and metadata suggest it was generated by wkhtmltopdf, a tool often used to create documents from web content, which could be leveraged to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3862

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://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=edge+of+darkness+call+of+cthulhu PDF link annotation

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