Malicious PDF — malware analysis report

Static analysis result for SHA-256 51fb0ef1940039b5…

MALICIOUS

PDF

46.9 KB Created: 2021-09-10 23:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8aedd5c888e85ff8cca69761ebd89dc1 SHA-1: 582b486945f3885864686b9bb1ff0dc3a37b2199 SHA-256: 51fb0ef1940039b5b018fc9bf6ef5450be6fa58ad7d18ad0108ff9069d0a2fcd
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains an embedded URL pointing to a potentially malicious domain. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The document body is heavily obfuscated and unreadable, but the presence of an external URI and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5214

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://wemservice.com/ckfinder/userfiles/files/33986803484.pdf In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=remote+desktop+ubuntu+from+androidPDF link annotation

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