Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f632af0367b1be…

MALICIOUS

PDF

17.7 KB Created: 2019-04-29 23:26:47 +01:00 Authoring application: mPDF 5.7
MD5: aa850eb3a82955db0af5f93ea074a46d SHA-1: 5da03190203cc699d4069d5f8d9b37995fde6c79 SHA-256: 42f632af0367b1beaf1025311b9f5dc761e69e339fd62932b5d9109630ccddd1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While most of these URLs point to benign-looking book titles, the sheer volume and the ML classifier's high confidence score suggest a malicious intent, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

Heuristics 2

  • 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.
  • 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://muicuiu.dumb1.com/2a07a09a03a01a01/The-Space-Between-by-Nikki-Mathis-Thompson.pdf
    • http://muicuiu.dumb1.com/1a01a09a04a06a05/Rebound-by-Nikki-Mathis-Thompson.pdf
    • http://muicuiu.dumb1.com/8a05a02a09a06a08/Nikki-and-Deja-Wedding-Drama-Nikki-and-Deja-Book-Five-by-Karen-English.pdf
    • http://muicuiu.dumb1.com/8a05a02a09a06a00/Nikki-and-Deja-Birthday-Blues-Nikki-and-Deja-Book-Two-by-Karen-English.pdf
    • http://muicuiu.dumb1.com/2a02a00a00a09a01/Resilient-by-Patricia-Vanasse.pdf
    • http://muicuiu.dumb1.com/4a01a05a09a03a00/Resilient-One-Boy-s-Story-by-Elijah-DeVivo.pdf
    • http://muicuiu.dumb1.com/2a08a06a08a07a03/Hot-Sensations-by-Mathis-B-Rogers.pdf
    • http://muicuiu.dumb1.com/9a03a08a01a05a08/A-Prison-With-No-Bars-The-Life-Story-of-a-Resilient-Woman-by-Cee-Cee.pdf
    • http://muicuiu.dumb1.com/9a01a07a01a01/Ray-Charles-by-Sharon-Bell-Mathis.pdf
    • http://muicuiu.dumb1.com/4a03a09a04a07a06/Magic-Resilient-Magical-Girl-Academy-3-by-Kayla-Bashe.pdf
    • http://muicuiu.dumb1.com/1a01a04a07a04a04a05/Thompson-amp-Thompson-Genetics-in-Medicine-by-Robert-L-Nussbaum.pdf
    • http://muicuiu.dumb1.com/1a01a04a07a03a02a05/Thompson-amp-Thompson-Genetics-in-Medicine-by-Robert-Nussbaum.pdf
    • http://muicuiu.dumb1.com/9a00a03a05a05a02/Beauty-for-Ashes-The-Introduction-by-Marisha-Mathis.pdf
    • http://muicuiu.dumb1.com/6a00a08a03a03/The-Twelve-Tribes-of-Hattie-by-Ayana-Mathis.pdf
    • http://muicuiu.dumb1.com/2a02a03a06a04a09/The-Resilient-Writer-Tales-of-Rejection-and-Triumph-by-Twenty-Top-Authors-by-Catherine-Wald.pdf
    • http://muicuiu.dumb1.com/9a07a01a07a00/Pursuing-Your-Purpose-How-To-Discover-God-s-Revelation-For-Your-Life-by-Carl-Mathis.pdf
    • http://muicuiu.dumb1.com/3a05a09a06a09a06/Living-Lies-Agent-Melanie-Ward-1-by-Kate-Mathis.pdf
    • http://muicuiu.dumb1.com/7a02a00a01a01a04/The-Paranoid-Parents-Guide-Worry-Less-Parent-Better-and-Raise-a-Resilient-Child-by-Christie-Barnes.pdf
    • http://muicuiu.dumb1.com/6a01a01a07a01a07/Managing-at-the-Speed-of-Change-How-Resilient-Managers-Succeed-and-Prosper-Where-Others-Fail-by-Daryl-R-Conner.pdf
    • http://muicuiu.dumb1.com/1a05a06a07a04a06/Nikki-Giovanni-Poetry-Collection-by-Nikki-Giovanni.pdf

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