Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e72888284e81547…

MALICIOUS

PDF

36.2 KB Authoring application: GIMP
MD5: 369e9b8bcd56943186481a005c2b8939 SHA-1: a0846a7168201ac829dce13b4489b06b61bb85f8 SHA-256: 5e72888284e81547db00342058e854ca29eae3eba8a2d7774eca949f0f0267b9
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. While no scripts were directly extracted, the nature of the embedded links and the ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 indicate a malicious intent to redirect users to potentially harmful content.

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://beautyefx.com/uploads/1/3/0/5/130541944/gizuvozemorujuma.pdf
    • http://paintball.africa/uploads/1/3/0/4/130436188/6489810.pdf
    • http://nevebros.net/uploads/1/3/0/5/130544539/fogedijipenipeg.pdf
    • http://hostmaster.aecom.nl/uploads/1/3/0/7/130739793/galewexoze.pdf
    • http://astoryofsplendor.com/uploads/1/3/0/4/130478868/b01098e39e9.pdf
    • http://whoonwswater.org/uploads/1/3/0/6/130620783/bawapobijako_zelogoda.pdf
    • http://lensphoto.com/uploads/1/3/0/5/130540172/kujipotizi.pdf
    • http://sparkfizz.net/uploads/1/3/0/8/130815726/titevu.pdf
    • http://cr9.io/uploads/1/3/0/6/130603853/fidezuz.pdf
    • http://mta44.somekindofsimple.com/uploads/1/3/0/5/130588202/kojajenaruvox.pdf
    • http://www.conditionzerometal.com/uploads/1/3/0/8/130814112/2dfebd5284ba4b.pdf
    • http://www.gcshading.com/uploads/1/3/0/6/130604558/pizaboti.pdf
    • http://12ktrv.com/uploads/1/3/0/4/130483872/6773165.pdf
    • http://milieugeospatial.mobi/uploads/1/3/0/4/130489265/130489265.html#htmlhelper+textbox+onchange

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c6.bin
b97ce9190bae8ee2beccc02e893fe8afb43097691d309013b7e583a63f781c8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C6 8936 bytes

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