Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e596be8f4806712…

MALICIOUS

PDF

36.4 KB Created: 2021-06-28 21:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: 2d34f13033fcd98ddb2d66dca6d5ee93 SHA-1: 3168e71c2dfde656233697d2e0961c71c62c32d3 SHA-256: 3e596be8f48067126e0a8e9a7d7c56334ceeca524bea7bdb232eb2164b878705
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing attacks. It contains embedded URLs that lead to other PDF files, suggesting a multi-stage download or redirection process. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7255

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://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/ndte80g1lq3pltdqo6ltbclip3/jajimugew.pdf In PDF document text
    • https://noihoithanhtuan.com/media/ftp/file/terapadorebivixekatoko.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/78d786f768792aeb0c2d196e027293aa/12155989507.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/21rcl0khIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=how+long+do+you+heat+ramen+noodles+in+the+microwavePDF link annotation

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