Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c18fa594eaba2c…

MALICIOUS

PDF

27.3 KB Authoring application: pdf-parser
MD5: 0c1d1481b68c778fac71694f80fa4214 SHA-1: 78da137a13cb3361ac4250d1d4432a2e85273cdf SHA-256: 41c18fa594eaba2c7ed9ff90b379831f47d12052e3253a5f3bb6477e821a7064
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, likely serving as landing pages or download sources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://sevola.ru/uploads/2020/01/27/varopemat_taruloledo_wijiz_momekizufun.pdf
    • http://bodibazuf.design-interior.su/uploads/2020/01/28/6197223.pdf
    • http://crazy-3d.tech/uploads/2020/01/27/252864.pdf
    • https://nenifuga.weebly.com/uploads/1/3/0/5/130550764/69f6c0ee3d24530.pdf
    • http://degawup.sportoptika.ru/uploads/2020/01/28/vufunidajakita.pdf
    • http://zorfa.icu/uploads/2020/01/28/vufomuvubumej.pdf
    • http://cardsmovinginc.com/uploads/1/3/0/4/130476075/130476075.html#centurions+cartoon+full+episodes+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000107e.bin
5827f00eceffc6db5ceb6fcb6463ea3a1d10aa8bb6e1b89c384b13a14e1ba8b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107E 6976 bytes

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