Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec09c2a816fcb0d…

MALICIOUS

PDF

33.0 KB Created: 2020-04-15 13:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3c7adb48f5e218c849c9bc3dcf6d5d76 SHA-1: 8f125f3a83c2b7f8a590819a66d76cbc7b73232f SHA-256: cec09c2a816fcb0dd843031d62744aad0f9ac11529384ea4f751e50bc73e5d8b
62 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded external URLs pointing to various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a high density of such links within a small PDF, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious content. No scripts were extracted, and the document body is largely unreadable binary data, limiting further analysis of intent beyond the link farm.

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://vanwaplumbing.com/uploads/1/3/0/3/130313179/130313179.html#ackerly+green+guide+to+magiq
    • http://pts-tr.com/uploads/1/3/1/4/131453201/2279815.pdf
    • http://cooparch.net/uploads/1/3/0/4/130493476/4b5f0d6e9e1f8a.pdf
    • http://lrfjewelersshop.com/uploads/1/3/0/5/130550868/binuzugotel.pdf
    • http://rachelmoltzdesign.com/uploads/1/3/0/8/130874360/8491692.pdf
    • http://luperroboticsltd.com/uploads/1/3/1/6/131607278/dcf2601171.pdf
    • http://extremeunderbrush.com/uploads/1/3/0/5/130540788/kozedelenanad.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000587d.bin
465db6b8d7f680e1ba57f20cba7270c0d0940b7edf40522a70f00def0740af93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587D 8268 bytes

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