Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fa37a3dc362e65…

MALICIOUS

PDF

41.2 KB Created: 2020-03-24 06:49:06 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1b4956faece314f32e791ac1fe628791 SHA-1: e6b6d5605958600b078544257008289aebc6bd2f SHA-256: 15fa37a3dc362e6594e63b40fe9353d6536a8c59dc0744eddddb29e800cb4f55
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to host SEO-optimized content. The document body, though partially corrupted, contains text related to downloading Corel Draw X5, suggesting a lure for users seeking software. The presence of many external links and the ML classifier's high confidence indicate a malicious intent, likely to redirect users to sites hosting malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://buzz4business.com/uploads/1/3/0/5/130543402/130543402.html#corel+draw+x5+software+free+download+full+version+with+key
    • http://drawinginchurch.com/uploads/1/3/0/5/130550782/mefudiwosetat.pdf
    • http://laugh-ng.com/uploads/1/3/0/5/130539247/zekazavatozazoxexer.pdf
    • http://littlecreationsmadewithlove.com/uploads/1/3/0/8/130874599/salotexodo.pdf
    • http://natecleveland.net/uploads/1/3/0/4/130483117/kixamowonila-xipalewij-nalikevuz.pdf
    • http://nuezdejabon.com/uploads/1/3/0/5/130540359/343301.pdf
    • http://ajautosalesva.com/uploads/1/3/0/2/130270941/biruxejam.pdf
    • http://iloveeleven.com/uploads/1/3/0/6/130620439/f83344d6bc.pdf
    • http://miayoshiokaphotography.com/uploads/1/3/0/4/130477805/silofirized-dudazetaxobi.pdf
    • http://www.thenannysden.com/uploads/1/3/0/7/130775830/26cfe6ad1.pdf
    • http://vetpoint.org/uploads/1/3/0/6/130604725/2247843.pdf
    • http://www.rivalconstructionservices.com/uploads/1/3/0/3/130379412/e11c12.pdf
    • http://secretwitches.com/uploads/1/3/0/2/130287257/putepezesut_libogivupudiv_gubixowonixefo.pdf
    • http://legacyparenting.today/uploads/1/3/0/7/130739454/05d4f5288b96d0.pdf
    • http://cmma2017.info/uploads/1/3/0/8/130814127/3567879.pdf
    • http://mikesvinyllettering.com/uploads/1/3/0/7/130776720/tamaruroxoro.pdf
    • http://www.platypusjournal.com/uploads/1/3/0/5/130588344/8357319.pdf
    • http://mysoundcollective.com/uploads/1/3/0/6/130639852/c3fe20338f217e1.pdf
    • http://www.silverbirchhomestead.com/uploads/1/3/0/2/130272325/xewadotobepaxun.pdf
    • http://stringsoil.com/uploads/1/3/0/7/130739371/fulurukosiv.pdf
    • http://kleinedeutschschule.com/uploads/1/3/0/2/130291838/8778097.pdf
    • http://caralarmnetwork.com/uploads/1/3/0/4/130435881/xirimes-figogoribav-zerod.pdf
    • http://planright.info/uploads/1/3/0/8/130813571/zibimefuturamupe.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_off0000774d.bin
61840845daa3e182b89f4d2d973276d14033757321125a02302338e04f82710e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774D 8192 bytes

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