Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b72505bb7629f4…

MALICIOUS

PDF

37.3 KB Created: 2021-09-21 17:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c38d95467001a4b58bd652afc9f8d7f2 SHA-1: d85479222763edbc3c519a99cc8ac9dacf54296f SHA-256: 45b72505bb7629f43392acbd4e6e2c406c0d6441abea2524fdd7cb4245bbd97d
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-heavy nature and small file size, typical of a screenshot used to hide clickable elements. The embedded URLs suggest redirection to malicious content or phishing pages. ClamAV detection and ML classification further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6864

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://xn--fiqa735be48e.com/upload/files/72490504702.pdf In PDF document text
    • http://sun-green.de/ckfinder/userfiles/files/80978207201.pdfIn PDF document text
    • http://netmutum.com/userfiles/file/20814216708.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/hb7prsoot6snbci1drbdvuijha/30854348975.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/fuwoso.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/legezavozatoleva.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146ceb96fb5b---winojexifoxuzunusanog.pdfIn PDF document text
    • https://somos.co/dleyes/admin/fotos/fiIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=13+letter+words+starting+with+pPDF link annotation

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