Malicious PDF — malware analysis report

Static analysis result for SHA-256 f964ae362db13fc6…

MALICIOUS

PDF

49.2 KB Created: 2021-02-17 17:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fa761599aab1bb19ce664ab7a09cb153 SHA-1: 6e944fea9f28fb920230e4642d142f377b53fba2 SHA-256: f964ae362db13fc6f489e9bef968e35170d16c53f4850a024600af6e53ad29a0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The embedded URL, https://yafferge.ru/aws?utm_term=are+diehard+battery+any+good, is confirmed to point to known malicious infrastructure. The ML classifier also indicated a high probability of maliciousness. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6121

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/aws?utm_term=are+diehard+battery+any+good In PDF document text

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