Malicious PDF — malware analysis report

Static analysis result for SHA-256 5220d38c92f7508f…

MALICIOUS

PDF

50.2 KB Authoring application: Adobe PDF Library 9.0
MD5: 1939ef83e0335b76a25b9813e3533c0f SHA-1: ef2f5925f7f69648558f4d924da38384fd8734c7 SHA-256: 5220d38c92f7508f529730e6f8cc0c7783698592ac8b6a48558430bc04c3f008
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a campaign focused on driving traffic to these external resources.

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://authorjulievail.com/uploads/1/3/0/7/130739204/jozuxibakikifiwix.pdf
    • http://hannanotherthing.com/uploads/1/3/0/5/130550882/tudidekifapojub.pdf
    • http://climatechangeforteachers.org/uploads/1/3/0/4/130483864/641069a4657430f.pdf
    • http://bostontangofestival.org/uploads/1/3/0/3/130379408/642071e2a9b7.pdf
    • http://www.trainthebot.com/uploads/1/3/0/6/130620482/bebominopuwox_jufam_zijavegemujibeb_luzofakabig.pdf
    • http://allaboutbeautybydeniseypau.com/uploads/1/3/0/4/130483632/simegeluj.pdf
    • http://bandstore.net/uploads/1/3/0/4/130436127/lemifatefomobixu.pdf
    • http://soviet-shrek.com/uploads/1/3/0/7/130776678/lumoradosin.pdf
    • http://butic.site/uploads/1/3/0/6/130621819/284737.pdf
    • http://www.pratochique.com/uploads/1/3/0/8/130814843/7c933257e0.pdf
    • http://finnsabia.com/uploads/1/3/0/5/130588675/9a100e30172.pdf
    • http://dream-job.site/uploads/1/3/0/5/130543207/xifisesepupirur_nipovitujoweze.pdf
    • http://www.mausandfigge.com/uploads/1/3/0/2/130274098/4375513.pdf
    • http://markkraemer.net/uploads/1/3/0/3/130323155/a1739d549fa.pdf
    • http://fiftycentfantasy.com/uploads/1/3/0/6/130639836/palur.pdf
    • http://vegas-magic.com/uploads/1/3/0/7/130775350/47110.pdf
    • http://richardmackson.com/uploads/1/3/0/2/130271142/0465fc2fcef762a.pdf
    • http://artisticsitedesign.com/uploads/1/3/0/7/130739430/2923007.pdf
    • http://sanfranauctions.com/uploads/1/3/0/5/130539810/ea46f45c04196.pdf
    • http://smartcapitaladvisors.com/uploads/1/3/0/6/130639862/6828180.pdf
    • http://grrswny.org/uploads/1/3/0/6/130620945/0745416e.pdf
    • http://grillou.fr/uploads/1/3/0/9/130969437/130969437.html#shoulder+impingement+rehab+exercises

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001103.bin
7bc8213c5c088ed53b05b1506b61889ed3b177663405cc409f6b174a1802b064		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1103 7948 bytes

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