Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2bb490b09d2d55…

MALICIOUS

PDF

36.4 KB Created: 2021-09-09 08:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5cbe39eff9768016ee05cdbbad5429e1 SHA-1: 7dd085c16b134bf8e0974390924b05718acc49db SHA-256: 4c2bb490b09d2d552b7e318009b01e332f5509fdd76210f6cd0645ab7c948251
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as an image-only lure, typical of phishing attacks. It contains an embedded URI that directs the user to a suspicious external URL. The ML classifier and ClamAV detection further support its malicious nature, indicating it likely serves as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7335

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 36 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://archism.ru/uplcv?utm_term=the+king%27s+avatar+episode+1+english+dub PDF link annotation
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/f0424e97c7f459d55749675b1d4c974b/17119186421.pdfIn PDF document text
    • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/74029712263.pdfIn PDF document text
    • https://mokhalasati.com/userfiles/files/85869611540.pdfIn PDF document text

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