Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d73a83e0d06d87e…

MALICIOUS

PDF

36.0 KB Created: 2021-07-14 10:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8f92db30bcc29d92345259659d2cc120 SHA-1: 7bd316cda29edaffdaf135a38f1e5dd09d7de9ec SHA-256: 1d73a83e0d06d87eae5b86ce3ee1d28e3aa0888327690ce0004b8a25b4d2af39
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file is identified as malicious by ClamAV and a machine learning classifier. It employs a common phishing tactic by presenting itself as an image-only document, likely a screenshot, to entice users to click on an embedded link. This link, or others found within the document, could lead to the download of further malicious content or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7689

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 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://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/2hp3suiebj5dppudvc14aq1v03/wizidametuz.pdf In PDF document text
    • https://bursac.net/userfiles/file/54243620221.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=drawings+for+boys+kidsPDF link annotation

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