Malicious PDF — malware analysis report

Static analysis result for SHA-256 c283fda744bb5ffb…

MALICIOUS

PDF

91.5 KB Created: 2021-06-20 07:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5cc13fd8f61944432673d927ecb50f9d SHA-1: 9430e156c986f70eb384de0ccdcb549b453c9440 SHA-256: c283fda744bb5ffb5b4001320c892ad443dd98bc4fd8d0bfa89e11e8b84006c7
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a PDF with a ClamAV detection of Pdf.Phishing.Trojan. The embedded URI points to a URL that is labeled as confirmed benign, but the overall context suggests a phishing lure. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'answer key', indicating a potential social engineering attempt to trick users into clicking the link.

Machine Learning

  • Nyx PDF Classifier clean score 0.1751

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://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=super+tet+answer+key PDF link annotation

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