Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd46ef0ff0c72e4…

MALICIOUS

PDF

35.9 KB Created: 2021-09-02 13:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b3584dd9e29ab008ffa66a2a345ee1e9 SHA-1: a4e81bb6560b39d41dbbaf6a768de16c31cc92da SHA-256: 5bd46ef0ff0c72e4a3d6b237100df656ec229ef3fcf8d4c35b01938dcd4e3427
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot designed to hide clickable elements. The presence of embedded URLs, one of which is unknown and potentially malicious, further supports this. ClamAV detection and ML classification confirm its malicious nature, likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7689

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 https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/0e24221099271f8af760d49adb169035/49352244799.pdf In PDF document text
    • http://www.aceitunasdelguadalhorce.es/ckfinderIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=mestek+dm100+manualPDF link annotation

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