Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef904a18afb3be9…

MALICIOUS

PDF

17.9 KB Created: 2019-04-30 04:12:55 +01:00 Authoring application: mPDF 5.7
MD5: a43c927dd5cf4589248c3c3176161efc SHA-1: 9109f6fe74da5de23b6b26e32243cc0a026dd5fb SHA-256: fef904a18afb3be97a9562e5f9d024a0304e555b8268e7acc170d14b45b6e7fd
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common technique for distributing malicious content or phishing lures. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to redirect the user to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/1a01a05a06a04a04a03/Eco-Fiction-by-John-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a06a00a02/Snail-Saves-the-Day-by-John-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a04a01a06/Animal-Cafe-by-John-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a04a01a07/The-Cats-of-Mrs-Calamari-by-John-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a04a00a09/Hooray-for-Snail-by-John-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a04a01a08/Wilson-and-Miss-Lovely-A-Back-to-School-Mystery-by-John-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a05a09a05/Craig-Stadler-s-Secrets-of-the-Short-Game-by-Craig-Stadler.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a04a05a07/Craig-Stadler-s-Guide-to-Better-Golf-by-Craig-Stadler.pdf
    • http://muicuiu.dumb1.com/6a07a04a04a04/On-Moral-Fiction-by-John-Gardner.pdf
    • http://muicuiu.dumb1.com/2a05a06a02a02a02/The-Art-of-Fiction-Notes-on-Craft-for-Young-Writers-by-John-Gardner.pdf
    • http://muicuiu.dumb1.com/3a02a05a01a02a04/The-Best-American-Science-Fiction-and-Fantasy-2015-by-John-Joseph-Adams.pdf
    • http://muicuiu.dumb1.com/3a02a04a09a00a04/Loosed-upon-the-World-The-Saga-Anthology-of-Climate-Fiction-by-John-Joseph-Adams.pdf
    • http://muicuiu.dumb1.com/3a08a05a08a06/The-Gothic-Imagination-Conversations-on-Fantasy-Horror-and-Science-Fiction-in-the-Media-by-John-C-Tibbetts.pdf
    • http://muicuiu.dumb1.com/6a00a03a05a04a08/Fiction-River-Justice-Fiction-River-An-Original-Anthology-Magazine-Book-27-by-Fiction-River.pdf
    • http://muicuiu.dumb1.com/8a03a06a08a07a00/The-review-of-contemporary-fiction-Douglas-Glover-Blaise-Cendrars-Severo-Sarduy-by-John-O-39-Brien.pdf
    • http://muicuiu.dumb1.com/1a01a03a07a00a03a08/Review-of-Contemporary-Fiction-Gert-Jonnke-Kazuo-Ishiguro-Emily-Holmes-Coleman-by-John-O-39-Brien.pdf
    • http://muicuiu.dumb1.com/1a09a01a06a04/Allan-Stein-by-Matthew-Stadler.pdf
    • http://muicuiu.dumb1.com/2a00a00a03a00/Landscape-Memory-by-Matthew-Stadler.pdf
    • http://muicuiu.dumb1.com/9a03a04a03a09a03/The-Review-of-Contemporary-Fiction-Spring-1995-New-Danish-Fiction-by-Hoeg-Brogger.pdf
    • http://muicuiu.dumb1.com/2a09a00a06a01a06/Mindscapes-Ten-Science-Fiction-and-Speculative-Fiction-Short-Stories-by-Victor-D-Lopez.pdf
    • http://muicuiu.dumb1.com/3a02a04a09a00a04/Loosed-upon-the-World-The-Saga-Antholog

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