Malicious PDF — malware analysis report

Static analysis result for SHA-256 254aca226bbfa334…

MALICIOUS

PDF

40.0 KB Created: 2020-03-29 06:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 007c1f7fcc0db7333367ca4e1c45a9d9 SHA-1: 4761cca851204e459a7061b383c80eb775b6bf28 SHA-256: 254aca226bbfa33428c7fe3e3bfbca1038a8aa46513ed8473d6af8d67326c4e4
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains. This pattern is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily obfuscated, but the presence of numerous external links is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://deceptivelysimple.com/uploads/1/3/0/4/130488152/130488152.html#diccionario+juridico+espa%C3%B1ol
    • http://www.renovationsbyrowe.com/uploads/1/3/1/0/131070719/8241587.pdf
    • http://theherbalandnutritionalexperience.com/uploads/1/3/0/7/130740316/658ddc7a878f9.pdf
    • http://joconnorbandproject.com/uploads/1/3/0/6/130604708/waduvutezamuluboxur.pdf
    • http://kemafamilyptyltd.com/uploads/1/3/0/9/130969148/5616878.pdf
    • http://monicarossa.com/uploads/1/3/0/6/130621988/4305164.pdf
    • http://etravismechanicalllc.com/uploads/1/3/0/6/130604633/ebd6cb1.pdf
    • http://noclintonsnomore.com/uploads/1/3/0/6/130621906/1778116.pdf
    • http://www.thecandicerose.com/uploads/1/3/0/7/130775515/a3d0ead510.pdf
    • http://samanthasruba.com/uploads/1/3/0/6/130604192/5e590e41.pdf
    • http://nancytoofani.com/uploads/1/3/0/5/130543054/sojagatebilo.pdf
    • http://gsalis.sylviasenglishonline.org/uploads/1/3/0/5/130590403/radevuwimiwame-zetef.pdf
    • http://www.dieterwentzel.com/uploads/1/3/0/5/130544635/rimajuvem_xolowebatonilu.pdf
    • http://www.neuvenicephoto.com/uploads/1/3/0/5/130589297/1398183.pdf
    • http://amfwpg.com/uploads/1/3/0/8/130813372/pusifuna-xitejoz-bifugetutilofuw-sinexonopezu.pdf
    • http://djmichaelsimon.com/uploads/1/3/0/6/130605019/wumezivovag.pdf
    • http://hendsc.com/uploads/1/3/0/5/130550901/bevuxi-sugiviv-boxifidelorewu.pdf
    • http://www.onecourageousbreath.com/uploads/1/3/0/6/130603966/6605578.pdf
    • http://mariapaquibot.com/uploads/1/3/0/5/130539583/3e89f.pdf
    • http://sweetpapayaphotography.com/uploads/1/3/0/5/130588382/xaxulolaravogi.pdf
    • http://lubbockcarpetworld.com/uploads/1/3/0/8/130874395/2515951.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_off00006e9a.bin
89de3e3b44ff4e19a014ddad7891dd5cbce0f32280d90d5482e2821d407732de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9A 9328 bytes

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