Malicious PDF — malware analysis report

Static analysis result for SHA-256 c237e23a955da659…

MALICIOUS

PDF

33.8 KB Created: 2020-04-14 10:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6710133d3130fc0e17b379f05cb8b923 SHA-1: 24ef350144e3da5ca59a9bfe816ac6a08fa2d83a SHA-256: c237e23a955da659ec94ab3a39b4365f038450367700c8e209aff4138a499750
62 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it is part of a link farm designed to manipulate search engine results. The document body mentions 'Fiora aram guide', which is likely a lure to entice users to click on the numerous embedded external links. These links predominantly point to other PDF files hosted on various domains, suggesting a coordinated effort to distribute content or traffic.

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://hallgreencleaning.com/uploads/1/3/0/5/130546657/130546657.html#fiora+aram+guide
    • http://rockypointsecurity.com/uploads/1/3/0/2/130289749/5910774.pdf
    • http://jsoutdoorsupply.com/uploads/1/3/1/3/131398430/xifurinifafan_rejulemujupikom.pdf
    • http://shopohchute.com/uploads/1/3/0/7/130739393/goponaretizuzudo.pdf
    • http://daryeelhomecare.com/uploads/1/3/0/8/130874018/b563a7983b097e5.pdf
    • http://jlm-electrical.com/uploads/1/3/0/7/130738882/9246189.pdf
    • http://raleighspraytan.com/uploads/1/3/0/5/130590678/a2ad3d82f.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_off00005d57.bin
3b2476a2a08fc8d9321ca07496b1a9735385d637cefe99e68eb375da54ddad9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D57 7844 bytes

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