Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a44a7b10e3977b5…

MALICIOUS

PDF

50.6 KB Created: 2021-03-01 22:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a33506a58e661e17a90439f5afd0dfc9 SHA-1: 6adfa7355aef50cbbfb77853a566e1d3bcf648f3 SHA-256: 4a44a7b10e3977b5be7986cd1104f62179ace7e6c70baee0d1b4bf56c76029c4
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 embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates a common tactic where a screenshot masquerades as a document to trick users into interacting with a malicious URL. The embedded URL, https://jacksth.ru/aws?utm_term=forklift+training+cost, is the primary indicator of compromise. No scripts were extracted, but the overall structure suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6121

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 50 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://jacksth.ru/aws?utm_term=forklift+training+cost

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