Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e011117df22baf…

MALICIOUS

PDF

31.5 KB Created: 2020-04-04 09:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f0732da97dd3900fd2cb01c20af7d92a SHA-1: 8c77538ebc406ec0b39942f16c444c8a8dfcdbb5 SHA-256: 84e011117df22baf97ba7cf231827090aa908586711b1cd4875844cf38364875
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs supports this. No scripts were extracted, but the structure suggests a lure to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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://ringoprint.com/uploads/1/3/0/5/130588846/130588846.html#que+es+preterito+copreterito+y+pospreterito+wikipedia
    • http://samlawlor.com/uploads/1/3/1/3/131383837/3333356.pdf
    • http://divinityfoundation.net/uploads/1/3/0/6/130620283/nuwegitida-fizuxugub-jenovagij.pdf
    • http://simplifycourtforms.com/uploads/1/3/0/9/130968947/1516847.pdf
    • http://susanjcurran.com/uploads/1/3/1/3/131381095/9956277.pdf
    • http://kinesitherapiehouben.com/uploads/1/3/1/4/131483336/famotarafazaxapi.pdf
    • http://handimaids.net/uploads/1/3/0/6/130621664/durovasebujil.pdf
    • http://sallykfrey.com/uploads/1/3/0/8/130813132/nidatusivel.pdf
    • http://legacysportsphx.com/uploads/1/3/0/6/130621141/wamiwubagawiv.pdf
    • http://captureyourjourneys.com/uploads/1/3/0/6/130604733/8482576.pdf

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