Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec75f163d9a6934…

MALICIOUS

PDF

35.8 KB Created: 2021-06-09 00:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1ab7f23f3e7424d2176f672be579fe54 SHA-1: 2dea26d9e95279e3aa741f6d98b43c1e339772eb SHA-256: 7ec75f163d9a69345de36e8dc2db1d11f28daea72944db41f404b4e8a497cd80
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and the presence of an external URI. The embedded URL, https://medvor.ru/uplcv?utm_term=activation+key+for+windows+10+education+64+bit, suggests a phishing attempt related to software activation keys. The ClamAV detection and ML classifier further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7155

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://medvor.ru/uplcv?utm_term=activation+key+for+windows+10+education+64+bit PDF link annotation
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/80d72054e9991133e2646d6dde9b7e30/55727608018.pdfIn PDF document text
    • https://vieclamday.com/userfiles/file/45219131710.pdfIn PDF document text

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