Malicious PDF — malware analysis report

Static analysis result for SHA-256 3827b8156e0e48ac…

MALICIOUS

PDF

24.6 KB Created: 2020-11-04 04:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b7fcb03906c99fd63c9ba60757767d SHA-1: 251ea57ef6c0ad64d0f0b8aadcc73e3e9d12536e SHA-256: 3827b8156e0e48acf600f63f43fe524683de27cf11badfeced2c5b3c06533996
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is identified as an image-only lure, typical of phishing attacks. It contains a link to a known malicious redirector infrastructure, which is designed to lead the user to a harmful website. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9862

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 24 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?keyword=ender+s+game+characters+ages

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