Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2787f7aac2a004b…

MALICIOUS

PDF

48.0 KB Created: 2020-03-24 06:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4c326c6d673fb9493b27a93ca9d7e542 SHA-1: 84cb8f7b5c1f0a3d9668616a6f5f03b874297bc2 SHA-256: b2787f7aac2a004b66906bc787dc2f96081341609ee712543c152081a4b96b72
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous embedded URLs pointing to a network of domains, many of which appear to be part of a link farm designed for SEO manipulation. The primary purpose seems to be directing users to these external PDF files, likely as a distribution method for further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://aussiebeachfun.net/uploads/1/3/0/8/130814070/130814070.html#chinese+textbook+for+beginners
    • http://exoticguesthouse.net/uploads/1/3/0/2/130272275/soruwogosipides-zupotarorip-susur.pdf
    • http://www.tickled-ink.co.uk/uploads/1/3/0/5/130550967/7256148.pdf
    • http://medicinaevolutiva.com/uploads/1/3/0/5/130543685/bufevigibobon.pdf
    • http://globalappliancesservicecare.net/uploads/1/3/0/4/130476389/vulatoxo.pdf
    • http://jimandcarolgarlow.com/uploads/1/3/0/5/130551247/tiwoz.pdf
    • http://refugedajourney.com/uploads/1/3/0/4/130492441/6394951.pdf
    • http://coastalfloorsde.com/uploads/1/3/0/8/130813692/c71491c167c6.pdf
    • http://www.pnwvegchallenge.com/uploads/1/3/0/2/130273944/f583dc0e51828.pdf
    • http://merchofvenice.com/uploads/1/3/0/8/130814926/7107825.pdf
    • http://thecaldarellagroup.info/uploads/1/3/0/7/130739603/4588624.pdf
    • http://bbartbyangelica.com/uploads/1/3/0/6/130639915/zotuvimogawomeg.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075ff.bin
b2d4b8d1babd99bd7307e6348458ff4c81539d1d1c14455ddbbd8a52a44dc46f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FF 8700 bytes
font_01_sfnt_off00009698.bin
9b8ab1bff9a144c5dbbc02b5f3d8c19c0e9f232b80dd819e3a9764875cf76473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9698 8804 bytes

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