Malicious PDF — malware analysis report

Static analysis result for SHA-256 537b69dbdf5e7317…

MALICIOUS

PDF

47.3 KB Created: 2021-09-18 15:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0026cb6b2dd35df8c8a3647c5481c7c6 SHA-1: 7914f23d5818193b60bfb0ca5ee73f0710c5b00c SHA-256: 537b69dbdf5e7317e94ac714e50822b942c25ada408d02a3ed8de83daf20defe
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. It contains an embedded URL pointing to a PDF hosted on 'eviljoy.com', which is classified as unknown reputation. The PDF's structure suggests it was generated by wkhtmltopdf, and it includes a URI that, while flagged as benign, points to a URL containing 'zero launcher apk download', hinting at a potential lure for malicious software. The presence of an external link within the PDF is a common tactic for phishing or directing users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4672

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://eviljoy.com/UserFiles/File/xafomukebemikepa.pdf In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=zero+launcher+apk+downloadPDF link annotation

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