Malicious PDF — malware analysis report

Static analysis result for SHA-256 b468398127084319…

MALICIOUS

PDF

29.7 KB Authoring application: Adobe PDF Library 9.0
MD5: ce6269ec76f4256ff1389846b30d50be SHA-1: d92899538cdfac992ff4d61a891c7e7978876ce3 SHA-256: b468398127084319863ceef503d14ea93ddea9c05cd9519cf44b45aa0582b842
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files across multiple domains, indicative of a link farm or redirection scheme. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, and ML classifiers also flagged it as malicious. The document body, though heavily obfuscated, contains references to these URLs, suggesting a phishing or malware distribution attempt.

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://elliotfisher.com/uploads/1/3/0/3/130313766/xukamenimasuruvivite.pdf
    • http://visionbystin.com/uploads/1/3/0/6/130604152/digoge.pdf
    • http://weve.vidracariaartvidros.site/uploads/2020/01/28/vepawewekugi.pdf
    • http://nunyabeeswax.net/uploads/1/3/0/2/130270863/8345546.pdf
    • http://theamazingtruth.com/uploads/1/3/0/5/130588644/dopefamire_nimigiga.pdf
    • http://newreb.com/uploads/1/3/0/2/130273788/130273788.html#2010+ab+calculus+free+response

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001081.bin
79c48987b0d0cb34190f562f60856295819fe7bb3ced1d0e9fa8280ce98b36e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1081 7760 bytes

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