Malicious PDF — malware analysis report

Static analysis result for SHA-256 c682fb53beb57b7b…

MALICIOUS

PDF

35.9 KB Created: 2021-09-17 10:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f5ff5c6b94f2956d0c071af0ae33a372 SHA-1: 35d647aad5fcc408a1c424bc9e6d31d81884632f SHA-256: c682fb53beb57b7b059e3b20e557090472c8c184312050f98533b87afed5df42
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as a phishing lure due to its image-only nature and a hidden click-outward action, a common tactic to deceive users. The presence of embedded URLs, one of which is unknown and potentially malicious, further supports this assessment. ClamAV detection and ML classification confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7874

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 http://inphuduong.vn/upload/files/foxijataxototukopijusaw.pdf In PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16131b402c05a4---65547620348.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=samsung+one+ui+home+apkPDF link annotation

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