Malicious PDF — malware analysis report

Static analysis result for SHA-256 16bf4cfe024df4bd…

MALICIOUS

PDF

40.4 KB Created: 2021-09-23 04:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: abd93a75282a64f1409e4b545335d2bf SHA-1: 55e1b462568ab9ef385ad794e442dea8052cf63d SHA-256: 16bf4cfe024df4bdd320bb2c479faec60aa0eb8cf63174eb4554788bfd2a5037
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating it is a phishing trojan. It contains an embedded URI pointing to 'synerhu.ru', which is likely part of a phishing campaign related to Google Play Store issues. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3471

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://synerhu.ru/uplcv?utm_term=play+store+stuck+on+pending+download PDF link annotation
    • http://floral-design-lindgens.de/userfiles/file/bewupeberefuzuselusakuta.pdfIn PDF document text
    • https://mlbcsimleague.com/ckfinder/userfiles/files/12803759235.pdfIn PDF document text

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