Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1bb63312e01b04…

MALICIOUS

PDF

36.6 KB Created: 2021-04-30 21:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 443b2901c21e0fed6dc4775bb6bfd83d SHA-1: 69bf52ee5becd615c2dfbcd0b54751108ac6c0fe SHA-256: 7b1bb63312e01b0485b48450164f776302186742da9f543adad8f88248e1a94b
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7212

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 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://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c2f457cf3---petunubibuvakezoseb.pdf In PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/1af7e2f7a34fcf6f20d46942e2bec668/28672460319.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=derivative+using+chain+rule+worksheetPDF link annotation