Malicious PDF — malware analysis report

Static analysis result for SHA-256 952894a29979c8f5…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 18:56:06 +01:00 Authoring application: mPDF 5.7
MD5: ce191d8ab54935a31531b07ef7bf8b0b SHA-1: c3cb88c29cfa0ce8c71b60c9d2c625d40ec3ccb2 SHA-256: 952894a29979c8f54fa91d36462508e3063baabbf95046a5f551e30bb391ee5f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution: Malicious File

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the document body is heavily obfuscated, the presence of numerous links to external PDFs indicates an attempt to direct users to potentially malicious or SEO-manipulated content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/6a03a00a01a06a07/Brandon-Sanderson-Stormlight-Archive-Book-One-Collection-2-Books-Bundle-With-Gift-Journal-The-Way-of-Kings-Part-One-The-Way-of-Kings-Part-Two-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/3a04a00a01a09a04/Firstborn-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/5a04a03a05/Snapshot-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/8a03a04a02a02a02/Legion-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/3a01a02a05a08/The-Rithmatist-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/3a01a01a05a09a09/The-Well-of-Ascension-Mistborn-2-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/2a07a06a04a03a09/Mitosis-The-Reckoners-1-5-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a07a01a08a02a07/Shadows-of-Self-Mistborn-5-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a02a08a02a00/The-Well-of-Ascension-Mistborn-2-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/2a01a04a03a03a09/Nightblood-Warbreaker-2-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/5a09a04a04a00a01/White-Sand-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a04a01a05a09/The-Alloy-of-Law-Mistborn-4-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a04a07a09a01a08/Shadows-of-Self-Mistborn-5-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/1a07a04a02a01a00/Mitosis-The-Reckoners-1-5-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a01a01a01a08a04/Sixth-of-the-Dusk-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a06a09a08a06a02/Elantris-Part-1-of-3-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/5a07a07a09a05/Steelheart-Reckoners-1-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/3a07a06a03a07a01/The-Alloy-of-Law-Mistborn-4-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/3a04a07a08a08/The-Bands-of-Mourning-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/3a08a02a09a00a03/Steelheart-Reckoners-1-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/4a02a08a02a00/The-Well

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