Malicious PDF — malware analysis report

Static analysis result for SHA-256 6094c1827535e7b0…

MALICIOUS

PDF

36.1 KB Created: 2021-10-01 02:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 36acfc52d0f0d17521d82a53db0ddc81 SHA-1: 82341803e1d68dda8e8dabc04761bc4b8b42635b SHA-256: 6094c1827535e7b00cb19eebcf425e9d28924024043468b620c0921e84704221
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic PDF_IMAGE_LURE indicates a common tactic where a screenshot is used to hide an action trigger. The embedded URL, https://ketchas.ru/uplcv?utm_term=oxford+handbook+of+psychiatry+4th+edition+pdf+free, is the most prominent IOC, likely leading to a malicious site or download. ClamAV also flagged this as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7086

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 https://ketchas.ru/uplcv?utm_term=oxford+handbook+of+psychiatry+4th+edition+pdf+free PDF link annotation
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/43e89521dea9d1b8cbae66105f085909/11430745511.pdfIn PDF document text
    • https://weboonline.com/ckfinder/userfiles/files/dumiferaf.pdfIn PDF document text
    • https://malinaionescu.ro/userfiles/file/folawufuripejapakomajo.pdfIn PDF document text

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