Malicious PDF — malware analysis report

Static analysis result for SHA-256 6593a3ac1b39c92d…

MALICIOUS

PDF

16.1 KB Created: 2019-05-03 06:04:40 +01:00 Authoring application: mPDF 5.7
MD5: ea328f491869eaef06375e26436cd0ec SHA-1: de72b4795dd42c9d2f6c885f8586f96c2bc6b758 SHA-256: 6593a3ac1b39c92d0987bcb7f30241707feed1d50cea299b065078e21f611318
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, masquerading as book downloads, which is indicative of a link farm designed to redirect users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a visual download button further supports the lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/7a07a03a02a06a01/The-Definitive-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/7a09a03a06a09a04/The-Definitive-Time-Machine-Visions-Series-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/8a02a08a06a03a04/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/1a01a05a04a04a03a06/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/5a02a03a02a09a01/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/1a00a04a08a03a02a00/The-Time-Machine-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/6a05a03a05a05a08/The-Time-Machine-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/4a01a07a07a09a08/The-Time-Machine-The-War-of-the-Worlds-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/8a06a02a00a07a01/The-Time-Machine-An-Invention-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/7a07a00a09a07a07/The-Time-Machine-Deluxe-Edition-by-H-G-Wells.pdf
    • http://muicuiu.dumb1.com/9a09a01a06a09a08/Evolution-in-H-G-Wells-s--The-Time-Machine--by-Anonym.pdf

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