Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6389c02f1eaeb3c…

MALICIOUS

PDF

50.1 KB Created: 2020-12-10 20:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21f83b3b4973bf805ea9ee0e3b149b48 SHA-1: 78ac06cd5fe389b146e191b00c693752c9089f30 SHA-256: d6389c02f1eaeb3cc799139318bde97bbf577238748af216b435e7f7265dee6c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9178

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://trafffe.ru/strik?utm_term=she%2527d+rather+be+with+me
    • https://moxitimufetumo.weebly.com/uploads/1/3/4/0/134040580/e9cd9592854e1dc.pdf
    • https://static.s123-cdn-static.com/uploads/4381751/normal_5fc559aa079e3.pdf
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/kegolabet.pdf
    • https://cdn-cms.f-static.net/uploads/4453718/normal_5fba29f15b68c.pdf
    • https://cdn-cms.f-static.net/uploads/4500692/normal_5fc1dd9b0a451.pdf
    • https://static.s123-cdn-static.com/uploads/4385213/normal_5fca404b8420c.pdf
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f88008726295.pdf
    • https://fiwenozagor.weebly.com/uploads/1/3/4/3/134363395/retoro-nivore.pdf
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5fbb3d8bdac22.pdf
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/5cb8a8bb63.pdf
    • https://s3.amazonaws.com/nuvukivaxiren/capacitor_ceramic_224_datasheet.pdf

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