Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6c870587e6bcc1…

MALICIOUS

PDF

42.7 KB Created: 2020-06-20 14:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69ee9c67d6a0424637a068df9f22e634 SHA-1: 46e45d675885b0f99d88045ab188afbae01d5b3d SHA-256: ae6c870587e6bcc1b5c6283c46951cbabc47bfa1413193acf561131f3640d458
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document is designed to appear as free worksheets for Spanish teachers, but it functions as a link farm. It contains numerous external links to PDF files hosted on various domains, likely intended to drive traffic or distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a deceptive SEO or traffic-driving scheme.

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://bellebaeuk.com/uploads/1/3/0/5/130550903/130550903.html#free+worksheets+for+spanish+teachers
    • http://mta-sts.mx.dinahsdreams.com/uploads/1/3/1/3/131383737/jatatuzabelobolagi.pdf
    • http://bishophollymission.org/uploads/1/3/0/5/130589413/6775779.pdf
    • http://cayugacutups.org/uploads/1/3/0/5/130551051/100c8.pdf
    • http://rockthedam.net/uploads/1/3/1/6/131606368/lujetu.pdf
    • http://egowheelchair.com/uploads/1/3/0/5/130588297/1492989.pdf
    • http://exchange19.ccfiji.com/uploads/1/3/0/7/130774964/7610354.pdf
    • http://slick2shine.com/uploads/1/3/1/8/131856402/652f51c4e57bdb8.pdf
    • http://cleanpro888.com/uploads/1/3/0/5/130544872/2513962.pdf
    • http://webdisk.chicagotrainingcenter.org/uploads/1/3/1/1/131164160/wibudizifiwijig.pdf
    • http://host5.celestecorp.com/uploads/1/3/1/1/131164097/jirukone_xevojexitirorat_figapuxizok.pdf
    • http://sultanalthani.com/uploads/1/3/0/3/130324289/sukojovaruxekotoj.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_off000069e3.bin
ccc11221d66172cb94e261835c6acc2c1d56f5f70f31c8cc09e48e2e686d425b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E3 4968 bytes
font_01_sfnt_off00007ad2.bin
e5cb41dc960dec82dfceddec4347eb9356d04a7d8a59f447188cbfd8f215cdc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD2 10600 bytes

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