Malicious PDF — malware analysis report

Static analysis result for SHA-256 316841dbd89de30a…

MALICIOUS

PDF

58.2 KB Created: 2021-02-27 11:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 11771ecf61c452e5943c6d1fdf9c7e82 SHA-1: 142061819bf593ee02b5a8e12e71620da36631ef SHA-256: 316841dbd89de30aa54da28b425e891b2b5922f4ac8aacc35c2265f8a60d042f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://dafemum.ru/award?keyword=ridgid+18v+1+gallon+air+compressor, is likely used to redirect the user to a malicious site. The document body, though truncated and obfuscated, suggests a lure related to an award or prize, consistent with phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7016

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://dafemum.ru/award?keyword=ridgid+18v+1+gallon+air+compressor In PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/sample_acknowledgement_of_debt_template.pdfIn PDF document text

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