Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6b8b6fc3166dd0…

MALICIOUS

PDF

50.6 KB Created: 2021-02-27 21:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9cc0d387bcf222ad802c4bfc90deb7e3 SHA-1: 6c2d25c107309e6258cef521fc44caed426dca06 SHA-256: 1c6b8b6fc3166dd0890ada0c71cb5a588655129532a42d6a45644112d5cfdfd8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/aws?utm_term=samsung+q7f+75'. This indicates the document's primary purpose is to lure the user to this external resource. The ML classifier and ClamAV also flagged the file as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7328

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/aws?utm_term=samsung+q7f+75 In PDF document text
    • http://fefezaw.rf.gd/46472236947.pdfIn PDF document text
    • http://waxuxeg.rf.gd/endospore_forming_bacteria_examples.pdfIn PDF document text

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