Malicious PDF — malware analysis report

Static analysis result for SHA-256 9636cb74eaca428a…

MALICIOUS

PDF

33.4 KB Created: 2020-05-13 00:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 768d5f5b6b40131d66b5580a200addf4 SHA-1: 55f4018dc3c69b0665b2ba1a06c1e574e96cda32 SHA-256: 9636cb74eaca428a74d42fd2fb58c46923abd3a647de628130dd21c27510b167
62 Risk Score

Malware Insights

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

The PDF document is designed to appear as IELTS test practice material, but its primary function is to host a large farm of external links. These links point to various PDF files on different domains, suggesting a tactic to manipulate search engine results or distribute malicious content. No scripts were extracted, and the document body itself is heavily obfuscated, making it difficult to determine the exact payload or further actions.

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://battlegroundfunctionalperformance.com/uploads/1/3/0/6/130639889/130639889.html#ielts+test+practice+book+2+reading+answers
    • http://earthflowers.shop/uploads/1/3/1/4/131482850/9398860.pdf
    • http://tourdeswat.com/uploads/1/3/0/6/130605351/fabupavisosut_jujixo.pdf
    • http://newskillnet.com/uploads/1/3/1/3/131380210/9846746.pdf
    • http://kolaygirisim.com/uploads/1/3/0/4/130475980/7686096.pdf
    • http://delaneybuyshouses.com/uploads/1/3/0/7/130738814/4283249.pdf
    • http://beaconins1.com/uploads/1/3/1/4/131483153/nidul.pdf
    • http://syracusechildrenschorus.org/uploads/1/3/0/7/130738929/8362914414.pdf
    • http://africanmarriage-lovespells.com/uploads/1/3/1/4/131483356/6008405.pdf
    • http://solucionesdelcaribe.net/uploads/1/3/0/6/130620736/1969846.pdf
    • http://proarbcare.net/uploads/1/3/0/9/130969085/71ae8.pdf
    • http://sandersoninsurancegroup.com/uploads/1/3/0/3/130313529/bf8dd376ccc.pdf
    • http://purelytakenphotography.com/uploads/1/3/0/5/130589202/jolamiw_tuzeno_zusedaminag.pdf
    • http://whataveganatetoday.com/uploads/1/3/0/7/130740558/6063165.pdf
    • http://newstjohnministries.com/uploads/1/3/0/8/130874265/mozime-lusidemox-rafizeb-riwaminor.pdf
    • http://mentalhealthyouthteacher.com/uploads/1/3/0/2/130287261/4850049.pdf
    • http://missionimpactpodcast.com/uploads/1/3/1/4/131407226/ginafanubaxutedenoxu.pdf
    • http://palimpsestproductions.com/uploads/1/3/0/5/130539913/togugarov.pdf
    • http://westlondontrading.com/uploads/1/3/0/7/130738884/ccbf0b27bdcd7.pdf
    • http://pelicanstatectf.org/uploads/1/3/0/5/130539842/6479023.pdf
    • http://thecasketcompany.com/uploads/1/3/1/3/131379045/zataturoguke-ginabexatonigis.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_off000058fc.bin
f690048021b6ca125dbebb60dfe7eb6f42559dd97c98d9c50102d5626aab7c8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58FC 9404 bytes

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