Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2d685d30df49ab…

MALICIOUS

PDF

41.8 KB Authoring application: Inkscape
MD5: b6b1b09fd3e216594f9892fdaf4e5a8c SHA-1: fb7357985168bf3067a2f2f151c60ed984fa4a50 SHA-256: 6b2d685d30df49ab7c705de6f5c6060fc59099341e1671ee606b4f6e89b1e693
152 Risk Score

Malware Insights

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

The PDF 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 content distribution scheme. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics further confirm the malicious nature of the file, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are the primary indicators of compromise, likely used to redirect users to malicious or spam 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://cancerresearchsimplified.org/uploads/1/3/0/5/130539241/1739893.pdf
    • http://personalinjurylawyer-calgary.com/uploads/1/3/0/5/130551282/xizilipovenig.pdf
    • http://photosbymj.weebly.com/uploads/1/3/0/2/130271209/fifedigot.pdf
    • http://dokuzu.bylight.ru/uploads/2020/01/28/kefutit.pdf
    • https://puraxubitisulod.weebly.com/uploads/1/3/0/2/130274316/208843.pdf
    • http://notarypublicincalifornia.com/uploads/1/3/0/6/130604601/19d807.pdf
    • http://1m3dp.com/uploads/1/3/0/4/130490328/kufinabalut.pdf
    • http://absystemsllcscam.com/uploads/1/3/0/3/130313790/130313790.html#report+biochemistry+lab
    • 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_off00001154.bin
2b85e2c439144810fa8e67f47f4b031f35390a5b5061e9c06490958f179ea04b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1154 8492 bytes
font_01_sfnt_off00006789.bin
3519e6a86a844236a9ae0dd292717a7a12f165a13732e457d0bee5c8a2861e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 3028 bytes

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