Malicious PDF — malware analysis report

Static analysis result for SHA-256 a98e16ccf5fdaeba…

MALICIOUS

PDF

34.3 KB Created: 2020-04-22 15:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 133e1fc5cc5327e92951ef46cfd93f9a SHA-1: 96aa58282a23791127420c0837438948ac27379f SHA-256: a98e16ccf5fdaeba6ee1d88d642ddd1558eb2417c9d4bb57dd9b664dfed2ef7d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, a technique commonly used for SEO poisoning or distributing malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating the document's primary purpose is to redirect users to potentially harmful websites. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9503

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://petitje.nl/uploads/1/3/0/7/130739308/130739308.html#monster+bike+games+free
    • http://vickyonthego.com/uploads/1/3/0/6/130639051/falijez.pdf
    • http://businesswritngmasters.com/uploads/1/3/0/5/130544448/92c59d1f6a5c.pdf
    • http://metransform.com/uploads/1/3/0/7/130739206/pakamezix-nojomok.pdf
    • http://habitdailyinc.com/uploads/1/3/0/8/130814286/fetoluzaze.pdf
    • http://equaview.com/uploads/1/3/0/5/130589145/revotofisaputivopa.pdf
    • http://ink-u-beta.com/uploads/1/3/0/3/130379150/logusakavog.pdf
    • http://seedoflifefarm.ca/uploads/1/3/0/2/130287514/55267.pdf
    • http://barbaraweiderhouse.ca/uploads/1/3/1/4/131453401/8777131.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006daa.bin
280511728a024d4afd81c770efe52985ff92b6cd7cddb067dbcf15e19c84f7f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAA 7552 bytes

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