Malicious PDF — malware analysis report

Static analysis result for SHA-256 848b15feac504af8…

MALICIOUS

PDF

38.7 KB Created: 2021-09-09 17:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: def0e696b0ba68de7942755512ded857 SHA-1: e95dee84bc73352bb92d0558862262c41c357e25 SHA-256: 848b15feac504af83a04dbebc8967297fe80509c58fbe35b17742805175e4dc7
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript and external URIs, identified by ClamAV as a phishing trojan. The embedded JavaScript likely facilitates the redirection to malicious URLs, such as the one found pointing to 'synerhu.ru', which is designed to trick users into downloading further malicious content. The presence of multiple suspicious URLs further supports the phishing and malware distribution intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4493

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://synerhu.ru/uplcv?utm_term=pokemon+super+mega+emerald+cheats+rare+candy PDF link annotation
    • http://le383.com/uploads/files/buwutanid.pdfIn PDF document text
    • https://clubberia.com/js/ckfinder/userfiles/files/duwolijulikuzozoma.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/2955ab8a1c69a570835eaace965c7bed/66863431476.pdfIn PDF document text
    • http://tainghe.vn/userfiles/file/In PDF document text

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