Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e398df7f088474a…

MALICIOUS

PDF

36.6 KB Authoring application: Karbon
MD5: 048500131468d4893271bc7bfe28867a SHA-1: eb0750d277dde4b3106d71bbb9db53f0d43834f2 SHA-256: 9e398df7f088474a08d25540af4c3c186fa1342791296b411ec1c358d2decc6f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or redirection scheme, likely intended to lead users to malicious content or phishing sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted from this sample.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.eventurouspresents.com/uploads/1/3/0/4/130436258/wodam-dibunogim-welupipuzeb.pdf
    • http://thedjbsmooth.com/uploads/1/3/0/7/130775724/jiretonin-nuremabano-vewera.pdf
    • http://www.club-up-golf.com/uploads/1/3/0/4/130475909/wivavole.pdf
    • http://nimatennis.com.au/uploads/1/3/0/3/130313188/fa3cae6a155d87.pdf
    • http://solarpanelsflorida.net/uploads/1/3/0/7/130775493/peputoderirasov.pdf
    • http://urbanscones.com/uploads/1/3/0/6/130621214/3451431.pdf
    • http://evisionmedia.co.uk/uploads/1/3/0/6/130639872/7795281.pdf
    • http://trimindmedia.com/uploads/1/3/0/3/130313196/rinimepo.pdf
    • http://mollybernard.com/uploads/1/3/0/6/130604973/togomapupuvix.pdf
    • http://reslermusicstudio.com/uploads/1/3/0/5/130540172/5225664.pdf
    • http://skfinancieel.nl/uploads/1/3/0/4/130477335/xosoxepunuwifaw.pdf
    • http://terrencebradley.com/uploads/1/3/0/8/130873893/dinaribow_nonogubotusimur_nulazakoxud.pdf
    • http://excercis-ng.com/uploads/1/3/0/6/130639558/ziwofata.pdf
    • http://trainingcenterchurches.net/uploads/1/3/0/4/130436163/depama-pixanaganireliw.pdf
    • http://debbybolandwatt.net/uploads/1/3/0/7/130738666/7453892.pdf
    • http://oakgrovetraining.com/uploads/1/3/0/4/130436282/zitiveraseterim.pdf
    • http://rcstudios.co.vu/uploads/1/3/0/6/130604775/130604775.html#sheet+music+for+great+is+thy+faithfulness+hymn

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031fd.bin
7d9006389d2ccd5dd943e03dbe453981c5ad0a6dfdb02e281da9f65e0f64212f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31FD 8340 bytes

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