Malicious PDF — malware analysis report

Static analysis result for SHA-256 710a6ca794ce1cf9…

MALICIOUS

PDF

36.0 KB Created: 2021-06-18 15:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0b4c9ab997bf98b4581db16e0b855738 SHA-1: 73c5e1708732119d10dd58da62fc401155b97e4e SHA-256: 710a6ca794ce1cf99af56ba2d11e5729fca3ccaec25c4f6432f3fc0a66dcba3c
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier. Heuristics indicate it's an image-only lure designed to trick users into clicking an embedded URI. The document body is heavily obfuscated, but the presence of a clickable link suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6067

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 35 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://philabc.ru/uplcv?utm_term=car+form+purchase+agreement PDF link annotation
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160796084b741e---24172048886.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/tamelikinitaxidoxivonojuj.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/31807288371.pdfIn PDF document text