Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ee95dce96428c3…

MALICIOUS

PDF

40.0 KB Authoring application: QPDF
MD5: f6369cb3593d674e8ff3f387ac063f2c SHA-1: e25f6f378154b5cbe397a3f29a11c625ac0fe5d0 SHA-256: 76ee95dce96428c31056eee78b50f9ae3de896b946c76f564b7df2449a66b7ca
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical finding for a large number of external links, suggesting a link farm designed to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or redirection-based attack. The embedded URLs are likely used to host or redirect to malicious payloads.

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://rosskelly.net/uploads/1/3/0/4/130488295/lukiwejuwo.pdf
    • http://nysaafg.org/uploads/1/3/0/2/130272296/298826.pdf
    • http://eurekaarchi.com/uploads/1/3/0/2/130287314/9bbcfa2ae10.pdf
    • http://ceramikerie.de/uploads/1/3/0/2/130287883/d0c338.pdf
    • http://nannymoscow.com/uploads/1/3/0/6/130621362/naxerurebelo-kawakisub-sebawomaf-xajisu.pdf
    • http://nwm6.club/uploads/1/3/0/2/130288412/zupuraba-vorufuxo.pdf
    • http://mltech.com.au/uploads/1/3/0/3/130379070/130379070.html#aruba+207+series+access+points+installation
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c6.bin
dada45e360c547ea69f28a75f466298ae6edc44f0dc3bf5e2727a0677d0d9ca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6 7700 bytes
font_01_sfnt_off00005620.bin
2f32b606ce2903a9ae10357dff13d6fe4023f7988eb52e72c558f998deb81188		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5620 16072 bytes

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