Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cb057d73541a5e…

MALICIOUS

PDF

16.7 KB Created: 2019-04-30 05:51:36 +01:00 Authoring application: mPDF 5.7
MD5: 7f1cd09bb0ece11763bbc34b2c79b012 SHA-1: 0f60a46d62ecddafb9cd2339b5166287dd4984b3 SHA-256: e9cb057d73541a5edcde301b7166975c9fbbaca2d649f048c561f7ae9e88f5c3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs appear benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to distribute further malicious content. The ML_NYX_PDF_MALICIOUS heuristic strongly supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/5a02a03a04a02/Ship-of-Magic-Liveship-Traders-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/3a05a00a03a07a07/Ship-of-Magic-Liveship-Traders-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/2a02a02a01a03a04/Ship-of-Magic-Liveship-Traders-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/3a01a02a06a01a01/Ship-of-Magic-Liveship-Traders-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/4a09a06a00a00a08/Ship-of-Destiny-Liveship-Traders-3-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/5a04a00a00a06/Novels-By-Robin-Hobb-including-Assassin-s-Apprentice-Royal-Assassin-Assassin-s-Quest-Fool-s-Errand-novel-The-Golden-Fool-Shaman-s-Crossing-Fool-s-Fate-Ship-Of-Magic-Forest-Mage-Renegade-s-Magic-Dragon-Keeper-hobb-Novel-Ship-Of-Destiny-by-Hephaestus-Books.pdf
    • http://muicuiu.dumb1.com/2a02a01a00a08a06/The-Inheritance-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/7a09a05a04a08a09/La-nave-in-fuga-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/3a01a03a07a00/Fool-39-s-Assassin-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/3a04a09a08a04a03/Fool-s-Fate-Tawny-Man-3-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/4a02a07a04a08a01/Shaman-s-Crossing-Soldier-Son-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/4a09a06a01a04a05/The-Golden-Fool-Tawny-Man-2-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/3a04a04a07a09/Golden-Fool-Tawny-Man-2-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/1a07a06a05a05a01/Fool-s-Errand-Tawny-Man-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/2a01a08a06a01a09/Assassin-s-Fate-The-Fitz-and-the-Fool-3-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/4a00a05a07a08a08/Assassin-s-Apprentice-Farseer-Trilogy-1-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/3a05a03a06a03a05/Royal-Assassin-Farseer-Trilogy-2-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/1a01a04a02a00a00a01/A-F-ria-do-Assassino-A-Saga-do-Assassin-3-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/7a03a07a04a03/O-Punhal-do-Soberano-A-Saga-do-Assassino-2-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/2a07a05a06a09a02/Royal-Assassin-Farseer-Trilogy-2-by-Robin-Hobb.pdf
    • http://muicuiu.dumb1.com/7a09a05a04a08a09/La-nave-in-fuga-by-Robin-H

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