Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa677c554eebadc0…

MALICIOUS

PDF

35.9 KB Created: 2021-07-15 20:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5cb2fca1145f698e903d36a50618e763 SHA-1: 51c0e46a8fe6efa9ac72cf71d5a9e592227da88d SHA-256: fa677c554eebadc0362bb04e5c1398226f34a7589230a7ea4fa5f40080e3eaf8
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier. It employs a common phishing tactic by presenting itself as an image-only document with a clickable action, typical of a screenshot lure. The embedded URLs, while one is confirmed benign, point towards potentially malicious destinations that could host further stages of an attack or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7731

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6def093de6---46734942468.pdf In PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d1c99dda4fd---4586227327.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=sharp+pain+in+side+of+boobPDF link annotation

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