Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0887551ec4be2c0…

MALICIOUS

PDF

47.6 KB Created: 2021-03-09 04:28:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4025047c980b0d84180565c83db9c12e SHA-1: 32761d35e274c2b5275ed6f88570d7396aaaa6e7 SHA-256: d0887551ec4be2c06c3655220dce8a3ba7b42ee263d93118e7211935d90ea736
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and ML classifiers, and exhibits characteristics of a phishing lure. It contains numerous external links, with one prominent URL pointing to a potential phishing or malware distribution site. The document's structure, being image-heavy with minimal text, suggests it's designed to trick users into clicking through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6379

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 47 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://xajibur.ru/award?keyword=bank+teller+interview+questions+and+answers+examples+pdf
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