Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b14eb1d152b5dc…

MALICIOUS

PDF

116.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 29e3ad922b4bdfa8bd5d6e85bd19dcce SHA-1: 0723dfc18caed3b6cf3b3b676bb4de7279441c23 SHA-256: 03b14eb1d152b5dca97f0144d9f3d38a7ce430f2aeb699c5e610bb028511cd85
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, disguised as a technical book. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the heuristic 'PDF_SEO_LINK_FARM' strongly suggest a phishing or malware distribution campaign. The document body mentions 'Matlab for dummies' and includes URLs that appear to be part of a link farm, indicating a likely attempt to drive traffic to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

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://winwithsuccess.com/uploads/1/3/0/5/130589006/xibisubemogu.pdf
    • http://newsightproductions.com/uploads/1/3/0/5/130589114/zidojeledenumi_daledarula.pdf
    • http://deedeemillbrae.com/uploads/1/3/0/5/130551559/gatasive_pumawemuw_tutisisud_xurine.pdf
    • http://asociacionperiodistaspr.org/uploads/1/3/0/7/130739498/130739498.html#matlab+for+dummies
    • 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_off000011e9.bin
dd4b3d74b3fda2007a3feee44b6b1896b44fe5592cf76b938b9100b14b5acc60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E9 10672 bytes
font_01_sfnt_off00006f06.bin
4e4b899caf3c9d8bc0a245bd8252a2a99225c2813ec5f464fdc0c414e05cf2e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F06 17224 bytes

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