Malicious PDF — malware analysis report

Static analysis result for SHA-256 b478058d54a16e98…

MALICIOUS

PDF

16.1 KB Created: 2019-05-02 01:40:36 +01:00 Authoring application: mPDF 5.7
MD5: 3f97cedcaa41e227f6a144436a48d9af SHA-1: 836caf84211434d07a13ded68047245f00a58409 SHA-256: b478058d54a16e9834dbc56b455e185efaedf52e8d71c43e5dd1c01640667f19
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently classified as benign, the sheer volume and structure suggest a link farm or SEO poisoning attempt. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/8a06a02a00a07a01/The-Time-Machine-An-Invention-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/1a00a05a06a07a03a01/The-Time-Machine-the-Original-Novel-Annotated-Masterpiece-Collection-The-Time-Machine-H-G-Wells-Famous-Quotes-Book-List-and-Biography-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/5a04a01a00a02a04/The-Time-Machine-By-H-G-Wells---Illustrated-Comes-with-a-Free-Audiobook-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/6a05a01a08a09a08/The-Time-Machine-Herbert-George-Wells-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/9a01a01a04a01a01/The-Time-Machine-Centaur-Classics-The-100-greatest-novels-of-all-time---96-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/6a05a03a05a05a08/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/5a08a03a00a02/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/9a00a04a08a05/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/8a02a08a06a03a04/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/5a02a03a02a09a01/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/1a01a05a04a04a03a06/THE-TIME-MACHINE-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/5a03a02a05a02a09/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/1a01a00a05a09a04a09/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/1a00a04a08a03a02a00/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/7a07a03a02a06a01/The-Definitive-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/4a01a07a07a09a08/The-Time-Machine-The-War-of-the-Worlds-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/9a04a02a02a03/The-Time-Machine-The-Invisible-Man-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/9a09a01a06a09a08/Evolution-in-H-G-Wells-s--The-Time-Machine--by-Anonym.pdf
    • http://muicuiu.dumb1.com/7a07a00a09a07a07/The-Time-Machine-Deluxe-Edition-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/9a03a07a01a07a05/The-Time-Machine-Premium-Edition---Illustrated-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/6a

Open this report in the interactive analyzer, or submit your own file for analysis.