Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ab0995f3b0b0e6…

MALICIOUS

PDF

44.0 KB Authoring application: Solid Converter PDF
MD5: 14e671c0aeeea7acee42d6f0c8827786 SHA-1: 14dcca9a907fd6bebba02768369b2980ef91dbf8 SHA-256: c8ab0995f3b0b0e6b1585a3aa9bb046d3282864cfe727a1e7d0e822511bf3d59
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

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. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies the mass external PDF link farm as a critical finding.

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://www.hoodxhippienails.com/uploads/1/3/0/5/130550667/6649883.pdf
    • http://folkartbyfaith.com/uploads/1/3/0/6/130621411/nerorokexiboreli.pdf
    • http://sfgflooring.co.uk/uploads/1/3/0/4/130435844/gipumagewepuw.pdf
    • http://minimatisse.shop/uploads/1/3/0/5/130544118/vegopo.pdf
    • http://caribbeanshadeproducts.com/uploads/1/3/0/2/130271132/pesulezej.pdf
    • http://www.winecountryadviser.com/uploads/1/3/0/3/130323818/7901120.pdf
    • http://www.emccorporatesolutions.co.za/uploads/1/3/0/5/130551115/mifuv.pdf
    • http://blesswiththedress.org/uploads/1/3/0/2/130273814/e82a68.pdf
    • http://tomryan.com.au/uploads/1/3/0/6/130639436/a3cbcd1c6.pdf
    • http://lwcalifornia.com/uploads/1/3/0/8/130874360/82dcf4.pdf
    • http://ll4kf.slpny.com/uploads/1/3/0/6/130621786/130621786.html#csma-cd+and+csma-ca

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000576f.bin
8eade35a538dd9495c1ba1265081b70da3f190ba7df644fa20fe291f57db55ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576F 7836 bytes

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