Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e538b5ec482d870…

MALICIOUS

PDF

34.9 KB Authoring application: Solid Converter PDF
MD5: 0599a9b19c6bfc510e3af9b1a33a2a5f SHA-1: 94edcde7166313a50fa41ceda3df4d0bbfd7353c SHA-256: 4e538b5ec482d87040fb04ebe47779f5d79ea7b897e76442a81df8497ce8d27d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, mentions '3d warehouse sketchup 8 models' and includes several URLs, reinforcing the lure. ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://neverweatherband.com/uploads/1/3/0/7/130775628/ecf96db3.pdf
    • http://kingfisher-strategy.com/uploads/1/3/0/5/130545698/figizasifamovol.pdf
    • http://kateyanne.com/uploads/1/3/0/6/130621669/daforet_nitukosopixafu_natifeliliwuse.pdf
    • http://policetrailer.com/uploads/1/3/0/7/130738764/130738764.html#3d+warehouse+sketchup+8+models

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fba.bin
00e21fd0a7e6c4ac1310f4486b2ed5fd4e0307a3e98ffdc00a19068b5dfb6c54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA 7584 bytes

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