Malicious PDF — malware analysis report

Static analysis result for SHA-256 21524f1d7adb5791…

MALICIOUS

PDF

8.7 KB Created: 2020-10-28 10:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a3b5aac03fd84361253fc471cf57202 SHA-1: cc6206437683027c017b888586990c6643610067 SHA-256: 21524f1d7adb579193dd12bb3711141f07c0f42fa02416c720353b7869e2c43f
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is designed as an image-based lure, presenting a screenshot to entice users to click a link. This link, identified as a malicious redirector, leads to the URL https://ggtraff.ru/strik?keyword=post+mortem+of+a+protagonist+to+kill+a+mockingbird. The ML classifier strongly indicates malicious intent, and the overall structure suggests a phishing attempt to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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 8 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://ggtraff.ru/strik?keyword=post+mortem+of+a+protagonist+to+kill+a+mockingbird

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