Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffedf45f7aabef85…

MALICIOUS

PDF

30.3 KB Created: 2020-04-07 14:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 02f7845cfcdcb44e49ebd815cb8b1beb SHA-1: e54de24bab6b2b262a0686181ca3cb024ce11ba3 SHA-256: ffedf45f7aabef85c5c4369a688d4d807f6ba2216f7d721cea8c48d97148f9ba
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious nature of the numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jwskidsteer.com/uploads/1/3/1/4/131438839/131438839.html#como+calcular+a+resistencia+equivalente+de+resistores+em+paralelo
    • http://minigoldendoodlesutah.com/uploads/1/3/0/7/130739330/majinudekupolonagij.pdf
    • http://classichassocks.org/uploads/1/3/0/5/130550657/wubejelakesisusumig.pdf
    • http://americawestinvest.com/uploads/1/3/1/0/131070761/xurutopujoluwewug.pdf
    • http://suprememicah.com/uploads/1/3/0/2/130291579/1444618.pdf
    • http://jasonjriddle.com/uploads/1/3/0/7/130775731/7963387.pdf
    • http://coachjp.org/uploads/1/3/0/8/130814441/ramutulexaxotup-pimibizime.pdf
    • http://henrik-skarland.no/uploads/1/3/0/5/130590076/8367098.pdf
    • http://dandbrentalsllc.com/uploads/1/3/0/5/130588656/laxeraxujije_rukisazuvules.pdf
    • http://deeparra.com/uploads/1/3/0/5/130588672/47878d4a.pdf
    • http://nowwicca.com/uploads/1/3/0/3/130379818/zaxapozemipoj.pdf
    • http://emmeline-kellett.com/uploads/1/3/0/7/130739837/4294367.pdf
    • http://globalhumax-dmaxcard.com/uploads/1/3/0/6/130620417/nexopug.pdf
    • http://vinetamis.com/uploads/1/3/0/9/130969965/xelobivelotujezugal.pdf
    • http://oliviaandkevin.com/uploads/1/3/0/6/130604923/4194995.pdf

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