Malicious PDF — malware analysis report

Static analysis result for SHA-256 7756e04b0246a6b2…

MALICIOUS

PDF

37.3 KB Created: 2021-09-16 03:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 35111b8e4214fe788d6170f582b298d1 SHA-1: 3ab0d7b6af102d4fe84bff7eb156b08ecba30c6d SHA-256: 7756e04b0246a6b26adce5adfb8250c3be57385f5fcd0d9dfb5f88f867de073a
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a phishing lure. It contains an embedded URI that points to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated and appears to be a screenshot, further supporting the lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7998

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 37 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://krisoc.ru/uplcv?utm_term=cornerstone+bible+church PDF link annotation
    • http://jeanthompson.nl/ckfinder/userfiles/files/25511748747.pdfIn PDF document text
    • http://avsa.org/sites/default/files/images/files/fogemi.pdfIn PDF document text
    • http://uts.edu.co/portal/app/ckfinder/userfiles/files/16499033119.pdfIn PDF document text
    • https://thisissati.com/userfiles/files/57900263871.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///4836668127.pdfIn PDF document text
    • http://jts-electrical.co.uk/ckfinder/userfiles/files/dimerijosew.pdfIn PDF document text
    • http://liderzy.natura2000.pl/imgturysta/files/moburibitomir.pdfIn PDF document text
    • https://valkexclusief.reviewz.eu/app/webroot/files/userfiles/files/79562535164.pdfIn PDF document text
    • https://giasidaily.com/uIn PDF document text

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