Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c31d3f2ec7e7474…

MALICIOUS

PDF

55.3 KB Created: 2021-07-31 18:36:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 0d1f6a56a5065a5c8f59a7594fe534a7 SHA-1: e447cd9802f1a3ed643b747dc86fd41496f97d42 SHA-256: 6c31d3f2ec7e747434ffcece4618a7d9ca94a4d3e55a1235849e5f6ffcc03e55
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by multiple security tools as malicious, including ClamAV and an ML classifier. It contains an embedded URI pointing to 'infrive.ru', which is a strong indicator of phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5037

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
  • 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://infrive.ru/uplcv?utm_term=what+is+meant+by+apportionment+of+overheads PDF link annotation
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbe4740a37---pelosanop.pdfIn PDF document text

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