Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab81d6c3fb2f10f…

MALICIOUS

PDF

39.9 KB Authoring application: ImageMagick
MD5: d5d98f8bb3b7fd4c8ce6f19bf6af056c SHA-1: d73423dd8ea847b40f34b344da82f5e08654bc10 SHA-256: 9ab81d6c3fb2f10f818b82864256ea18ad0d279941f640b337ead01de7810fbb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document that contains embedded URLs pointing to other PDF files and an HTML file. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Reported speech dialogue exercises with answers'. The primary attack pattern involves tricking the user into accessing malicious content via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://naualli.net/uploads/1/3/0/5/130540604/kapozubebudumutonil.pdf
    • http://singularityventuresgroup.com/uploads/1/3/0/5/130550750/487550.pdf
    • http://stlouisbdsmdominatrix.com/uploads/1/3/0/3/130379083/2499220.pdf
    • http://northwestuu.com/uploads/1/3/0/3/130313108/130313108.html#reported+speech+dialogue+exercises+with+answers

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fbe.bin
a816675fd3b82a3b1894234b491f8dec882160479961c29a03143c81d90ed469		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE 7832 bytes
font_01_sfnt_off0000610e.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610E 2652 bytes

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