Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c616ea1b54eb0f…

MALICIOUS

PDF

39.6 KB Created: 2020-04-05 08:12:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 55ed9aa0db260f609fefa48d944d6fcf SHA-1: 0299a047e9fc8fa664960a013c4433d9f94f1c18 SHA-256: 91c616ea1b54eb0f593575c8c0b3a5ed00484d5416374b8eb28ed5e4fdac927b
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, indicating it is part of a link farm or SEO poisoning campaign. The document body, though partially obfuscated, contains text related to 'Cloruro de potasio usos medicinales' which is used to lure users to these external sites. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a mass of external PDF links, suggesting the primary goal is to drive traffic to these sites, potentially for malicious redirection or further exploitation.

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://splashingbonaire.com/uploads/1/3/1/3/131398457/131398457.html#cloruro+de+potasio+usos+medicinales
    • http://windsormovingcompany.com/uploads/1/3/0/7/130775515/1745141.pdf
    • http://dramagramtv.com/uploads/1/3/0/3/130379367/ripetedoxepe_lirixew_gulipirobomizav_wilotemuwopamo.pdf
    • http://embraceyourshadow.com/uploads/1/3/0/5/130539350/00d618e93.pdf
    • http://fixmyglucose.com/uploads/1/3/0/9/130969308/bikabelowin.pdf
    • http://sunflowerandwillowsco.com/uploads/1/3/0/2/130288455/0db44.pdf
    • http://getsocialfied.com/uploads/1/3/0/5/130588961/79e2c.pdf
    • http://unitedstatesmodelandtalentrocks.com/uploads/1/3/0/7/130738621/tizawipapamoratesos.pdf
    • http://businessclaiming.com/uploads/1/3/0/7/130775032/xapibig.pdf
    • http://foodnow.org/uploads/1/3/0/3/130379389/sebugigepujet_bozuxo_mezibaranetidoz_dolotoxoka.pdf
    • http://enjonicoffee.com/uploads/1/3/0/3/130379504/5580891.pdf
    • http://giving2day.org/uploads/1/3/0/5/130590672/bokoguvegux.pdf
    • http://awakenmusictherapy.com/uploads/1/3/0/3/130312983/geloperuviga.pdf
    • http://bestvehiclesforsale.com/uploads/1/3/0/6/130605071/5962586.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077c9.bin
dee21f3a6ef6ba7549a05ec00fb3aa557b696a576e874bf28c344bd31ef9fe08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C9 8620 bytes

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