Malicious PDF — malware analysis report

Static analysis result for SHA-256 32cfaf23c48027be…

MALICIOUS

PDF

40.3 KB Created: 2020-03-30 02:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8b68582e18b3849ff13f33027a27aa2b SHA-1: 662fda870a476edb4838cfdd7b989b710f61bf16 SHA-256: 32cfaf23c48027be944c4d7d4aff17e50c94cbeae5c9cb213748c7865a247fff
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDFs with numeric slugs, indicative of a link farm or SEO abuse. The document body, though heavily obfuscated, contains text related to 'Balanceo de ecuaciones metodo algebraico ejercicios resueltos pdf', suggesting a lure to attract users searching for educational content. The primary purpose appears to be directing users to a network of potentially malicious or spam-related websites.

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://www.equestrianeliteatapplejackfarm.com/uploads/1/3/1/4/131409035/131409035.html#balanceo+de+ecuaciones+metodo+algebraico+ejercicios+resueltos+pdf
    • http://americanexteriorsfencing.com/uploads/1/3/0/8/130874393/600ec23946cc4d.pdf
    • http://goldenhillshoney.com/uploads/1/3/0/5/130589222/f0313f46e169b25.pdf
    • http://resourcerecoverycorporation.com/uploads/1/3/0/7/130776394/zopag_waxububip_nuwagajuzox.pdf
    • http://abbzcraftz.com/uploads/1/3/0/8/130814200/varigapudibodaxowol.pdf
    • http://fet4life.net/uploads/1/3/0/5/130590564/koserokopizapok.pdf
    • http://wuulashes.com/uploads/1/3/0/7/130775557/3814056.pdf
    • http://bantambloom.com/uploads/1/3/0/6/130639533/bac7f0.pdf
    • http://channingladden.com/uploads/1/3/0/9/130968947/xodafasavowibixi.pdf
    • http://elvination.org/uploads/1/3/0/5/130588185/wejuvitugazebi-wuritupifud.pdf
    • http://geoffwehmeyer.com/uploads/1/3/1/4/131437839/xanejejapezenuf-wiwuwi.pdf
    • http://njeventoffice.com/uploads/1/3/0/6/130604433/bapafelejuwogegib.pdf
    • http://vegan-joe.com/uploads/1/3/0/6/130603909/3a05c5f74f.pdf
    • http://solarengineeringplus.com/uploads/1/3/0/2/130289332/5932644.pdf
    • http://digitalmarketingguru.org/uploads/1/3/0/4/130436071/9e288476eed5e9.pdf
    • http://southhamstraining.com/uploads/1/3/0/4/130435881/fovutaxisepoforujo.pdf
    • http://aekus.ca/uploads/1/3/0/6/130639634/50e5f5.pdf
    • http://thelowvisionstore.org/uploads/1/3/0/7/130776213/149834.pdf
    • http://progenator.net/uploads/1/3/0/6/130603673/6075902.pdf
    • http://ohchiconline.com/uploads/1/3/0/5/130540085/d37c6acfc9.pdf
    • http://orthopop.com/uploads/1/3/0/6/130639126/vejurufogor.pdf
    • http://propiedadespaniagua.com/uploads/1/3/0/6/130622029/sopepuxuru_valudekenaj_nokunotozele.pdf
    • http://artsandplay.com/uploads/1/3/0/6/130604556/futipovisis.pdf
    • http://healthconnect.international/uploads/1/3/0/6/130620327/badotefaz_xejelexedafesin_xixobivovujosoj.pdf
    • http://healthconnect.international/uploads/1/3/0/6/1
    • 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_off00006727.bin
1ecaa5945b8ac121e643dd04ae62f289e5ab4798138f3a5575134c03bfd8a2a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6727 8936 bytes
font_01_sfnt_off000087f2.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87F2 2652 bytes

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