Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9637f48cdd0fd2…

MALICIOUS

PDF

58.6 KB Created: 2021-05-01 20:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4864bafd7efaa2dc99da7d0d15c97cf9 SHA-1: d458e2d98fe8f6450f6084104efde59f3bd115ef SHA-256: 1d9637f48cdd0fd200c8f7e367a1b62a755493f5a6e5ef7d8d188c39960eadda
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and an ML classifier. It employs a common phishing technique by presenting a full-page image as a lure, with a hidden clickable action that redirects to the URL https://yafferge.ru/strik?utm_term=fz+220+price+in+india. This URL is flagged as a known malicious redirector, indicating a likely attempt to phish credentials or deliver further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7345

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-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 58 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://yafferge.ru/strik?utm_term=fz+220+price+in+india
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