Malicious PDF — malware analysis report

Static analysis result for SHA-256 0621552872b331f5…

MALICIOUS

PDF

318.2 KB Created: 2021-03-04 15:32:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f86b24aafa928bb5980b3ff64634b3c2 SHA-1: 304e3fe16c978e50fd30d395eb55625b2e7bc839 SHA-256: 0621552872b331f5ee4026de9eb01b2dd7914d036af1689c964c958bb126a555
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. It contains an embedded URL pointing to 'zajinet.ru', which is likely a phishing domain. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0345

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://zajinet.ru/award?keyword=how+to+use+natural+tangents+in+log+table PDF link annotation

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