Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9877707f1e93bf5…

MALICIOUS

PDF

148.5 KB Created: 2021-07-22 09:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 40915e1db2ead2fce7e0e6d58ca66e80 SHA-1: c2f1f806fda7bdf11e6526eb85d69853eb94da93 SHA-256: d9877707f1e93bf56afcd15a631fa9800d36fbf86286eaf76831af7e98a813a5
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan characteristics. It contains an embedded URI pointing to a Google feedproxy URL, which is likely a redirection to a malicious site. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not a typical user-authored document.

Machine Learning

  • Nyx PDF Classifier clean score 0.2099

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/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=snow+makers+ielts+reading+answers PDF link annotation

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