Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b0bc41b54c8691…

MALICIOUS

PDF

36.3 KB Created: 2021-09-07 13:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: af8f5d91a3f1a4948605b6ccd1f22858 SHA-1: f2e70c9ca0a7883f1531fd81337616cc95cbe615 SHA-256: f8b0bc41b54c86917898546bb4f8a745a8fea008184f8a30580481740794d1a9
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure due to its image-heavy nature and embedded clickable action. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is intended to redirect the user to a malicious site, likely for credential harvesting or further payload delivery. The presence of multiple unknown URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7131

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 36 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 http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16129d921bd84a---7054561517.pdf In PDF document text
    • https://gestionarival.com/userfiles/file/40492326218.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/mebis.pdfIn PDF document text
    • https://alariel.be/userfiles/file/talofis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=female+fitness+model+workout+plan+pdfPDF link annotation

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