Malicious PDF — malware analysis report

Static analysis result for SHA-256 55967e1cc4bc32a7…

MALICIOUS

PDF

35.9 KB Created: 2021-07-14 05:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 203116a7abadda7b2d725f51fd51dec0 SHA-1: 1f95c4938c20fcb304118dd8f271866565788ec4 SHA-256: 55967e1cc4bc32a7f1f8743cbd26ced6e107127e7687bcc2837b38ea208e19cc
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and a machine learning classifier. It employs an image-only lure, typical of phishing, with a clickable action directing users to an external URL. The heuristic 'PDF_IMAGE_LURE' indicates a common phishing tactic where a screenshot masquerades as a document, prompting users to click through to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7249

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://ketchas.ru/uplcv?utm_term=verb+tenses+exercises+multiple+choice PDF link annotation
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae79878861a---puwim.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/govuzidekexekipejugekukil.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-uploIn PDF document text

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