Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbdbe4e136d49db4…

MALICIOUS

PDF

50.6 KB Created: 2021-01-08 09:01:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 801856f48fb1fb0d809265d9f6e4c099 SHA-1: a630009553ab0276585e155572cc19b9553c6988 SHA-256: fbdbe4e136d49db4a1d102a47a8b24564fe05c9d97689850875d1fe14bb46818
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious due to its structure, which mimics a screenshot to lure users into clicking a link. The embedded URL, https://cctraff.ru/aws?utm_term=virtual+keyboard+synthesizer+software+free, is known to be part of a malicious redirector infrastructure. The combination of these factors strongly suggests a phishing attempt designed to lead the user to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6121

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?utm_term=virtual+keyboard+synthesizer+software+free

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