Malicious PDF — malware analysis report

Static analysis result for SHA-256 04893d3cb38f3e59…

MALICIOUS

PDF

44.8 KB Authoring application: pdf-parser
MD5: a2b6392f2ad193b83cf24afc3604aa05 SHA-1: b6b69a68829a20e068bdfa7fda655fb63d4cbecc SHA-256: 04893d3cb38f3e594abafcebe66ae03e0c4ae3a7910a2ce97f4fed79a368d6e3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document body, though heavily obfuscated, contains URLs that are likely part of this link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://animalmatters.com.au/uploads/1/3/0/4/130476632/4755825.pdf
    • http://ratuk.pay-pass.xyz/uploads/2020/01/28/1321833b.pdf
    • http://myautosaver.com/uploads/1/3/0/2/130273798/donakorajiv_jefifoganavope_saxasizepomek.pdf
    • http://noeticpractices.com/uploads/1/3/0/5/130588729/purixuwomo.pdf
    • https://livugopirakap.weebly.com/uploads/1/3/0/3/130379635/najove_paxekazi_tulaze.pdf
    • http://ninawang.weebly.com/uploads/1/3/0/4/130483138/1dfe68c22fdb9.pdf
    • http://humanizingtheenterprise.com/uploads/1/3/0/4/130494059/zogaputumupovamur.pdf
    • http://kilitewin.copyrightcontact-100000659807.com/uploads/2020/01/28/sigudevarade.pdf
    • http://thewoodsumc.com/uploads/1/3/0/4/130489097/sumilod_teris_gunivatoga_roxuruwupige.pdf
    • http://thekookas.com/uploads/1/3/0/6/130639591/38656a.pdf
    • http://dorseydeportfolio.com/uploads/1/3/0/4/130493893/wojot.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/5/130539888/130539888.html#investigacion+cuantitativa+tecnicas+de+recoleccion+de+datos
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000138a.bin
3913a9dbaa37773ea5fb1c167cf57445a9da3eea25f46db1fa6ca917ee9c832a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138A 9088 bytes
font_01_sfnt_off000067fd.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD 16204 bytes

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