Malicious PDF — malware analysis report

Static analysis result for SHA-256 7417c0bd9c7593c6…

MALICIOUS

PDF

38.2 KB Authoring application: Adobe PDF Library 9.0
MD5: fe54e96dc6aca5f7908690af8d1d6302 SHA-1: 5ef7fc64cb00d15d86f7ce7d4a73a3bed907fb0a SHA-256: 7417c0bd9c7593c66a8d003e90bc25376545e2d357150f5e889cbe9e446b11b8
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://renmach.com/uploads/1/3/0/5/130588747/jafepe_talum.pdf
    • http://arlotrainor.com/uploads/1/3/0/3/130379426/1bcb9357ad4c.pdf
    • http://dirtkingsrc.com/uploads/1/3/0/2/130273803/jubutotoxope.pdf
    • http://fotu.tastydowns.com/uploads/2020/01/28/januzet.pdf
    • http://almansweide.nl/uploads/1/3/0/5/130539042/xojuna.pdf
    • http://rajukumid.spec-foto.ru/uploads/2020/01/29/3145678.pdf
    • http://canniny.com/uploads/1/3/0/6/130621801/98bbac.pdf
    • http://mrsteamparts.com/uploads/1/3/0/2/130291592/tegodatopobabituw.pdf
    • http://sporttihetki.net/uploads/1/3/0/4/130488940/f17dca36b8.pdf
    • http://milexy.com/uploads/1/3/0/4/130435590/89326d6.pdf
    • http://thecottonlickers.com/uploads/1/3/0/7/130739264/130739264.html#smapi+game+failed+unexpectedly
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001253.bin
3d56eefe8899d35e4664c6c0203061555c0d8f1961e022f665b6ca9fc4af4553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1253 8300 bytes
font_01_sfnt_off00005902.bin
42534f1d51f0d5a7e113c67cbd4da708409211945329c9e7e705defc554aa9b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5902 2900 bytes

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