Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95c8e4dfcdcea0c…

MALICIOUS

PDF

48.0 KB Created: 2020-11-23 17:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e87db4102e587024836fe3961b33c93 SHA-1: e06d5e814e79b2320cd9ca717aabfbdd0773a044 SHA-256: a95c8e4dfcdcea0cfe7701123793f63c78c27a201e71a79a27bfb9adf32ae486
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links pointing to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged the file as malicious. Although no scripts were explicitly extracted, the document body's obfuscated nature and the presence of a malicious URL suggest an attempt to trick the user into visiting a harmful site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5996

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/123?utm_term=lyrics+for+this+is+me+the+greatest+show
    • https://ziresaro.weebly.com/uploads/1/3/4/5/134509830/705e7adce7230.pdf
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f945b239c23c.pdf
    • https://movogabi.weebly.com/uploads/1/3/4/8/134881325/mesutelanimusikavol.pdf
    • https://s3.amazonaws.com/wuzalugiseto/iphone_activation_lock_removal_free.pdf
    • https://s3.amazonaws.com/nowonovege/bayesian_methods_for_hackers_cam_davidson-_pilon.pdf
    • https://s3.amazonaws.com/tetazino/gavaf.pdf