Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ece9258e20a77a5…

MALICIOUS

PDF

55.8 KB Created: 2021-03-14 02:26:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a5072e37fb8d3992e9baee4b576dd90 SHA-1: 8f115a5dd0ac64122cd718ff2156b47bf819c808 SHA-256: 8ece9258e20a77a52b9edf7188f6bbee993a7ffa5d4a1b4a42c31fa0854faac0
144 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. It contains numerous external links, suggesting an attempt to redirect users to malicious websites for credential harvesting or further malware delivery. The ClamAV detection further supports its malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4907

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 55 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://fokemale.ru/award?keyword=job+application+letter+sample+pdf+free+download
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