Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee32bea53d4712d…

MALICIOUS

PDF

18.9 KB Created: 2019-05-07 03:30:01 +01:00 Authoring application: mPDF 5.7
MD5: beef91035b25edfa88563590469200d9 SHA-1: 6c460991711b5a0ef5cd3a74836981a8279bf028 SHA-256: 4ee32bea53d4712d685e89b95b0ecfd9eb96a0b34d1a71b6af7e3ce8d4252ad8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, which is a common tactic for SEO poisoning or driving traffic to malicious sites. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing indicate a malicious intent to direct users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/5a06a03a02a04a07/A-Life-of-Learning-Abraham-Lincoln-s-Pursuit-of-Wisdom-by-Will-Foret.pdf
    • http://muicuiu.dumb1.com/4a03a07a05a08a09/Abraham-Lincoln-Great-Speeches-by-Abraham-Lincoln.pdf
    • http://muicuiu.dumb1.com/1a01a04a06a07a00a04/The-Collected-Works-of-Abraham-Lincoln-by-Abraham-Lincoln.pdf
    • http://muicuiu.dumb1.com/1a01a06a06a01a08/Abe-s-Honest-Words-The-Life-of-Abraham-Lincoln-by-Doreen-Rappaport.pdf
    • http://muicuiu.dumb1.com/2a05a04a06a08a08/Works-of-Abraham-Lincoln-Includes-Inaugural-Addresses-State-of-the-Union-Addresses-Cooper-s-Union-Speech-Gettysburg-Address-House-Divided-Speech-MORE-by-Abraham-Lincoln.pdf
    • http://muicuiu.dumb1.com/7a03a03a07a01a00/The-Lincoln-Memorial-Album-Immortelles-Excerpts-by-Abraham-Lincoln.pdf
    • http://muicuiu.dumb1.com/7a00a04a04a03a01/Statues-of-Abraham-Lincoln-Avard-Tennyson-Fairbanks-Correspondence-Excerpts-from-Newspapers-and-Other-Sources-by-Lincoln-Financial-Foundation-Collection.pdf
    • http://muicuiu.dumb1.com/7a00a04a04a02a08/Statues-of-Abraham-Lincoln-Avard-Tennyson-Fairbanks-Personal-Excerpt-from-Newspapers-and-Other-Sources-by-Lincoln-Financial-Foundation-Collection.pdf
    • http://muicuiu.dumb1.com/5a09a06a00a00a02/In-Pursuit-of-Abraham-by-Francine-Fuqua.pdf
    • http://muicuiu.dumb1.com/4a00a04a02a03a04/Who-Was-Abraham-Lincoln-by-Janet-B-Pascal.pdf
    • http://muicuiu.dumb1.com/2a05a04a04a03a05/Speeches-and-Writings-by-Abraham-Lincoln.pdf
    • http://muicuiu.dumb1.com/7a00a00a08a07/Abraham-Lincoln-by-Ingri-d-39-Aulaire.pdf
    • http://muicuiu.dumb1.com/5a01a07a01a09a04/Recollected-Words-of-Abraham-Lincoln-by-Don-E-Fehrenbacher.pdf
    • http://muicuiu.dumb1.com/4a03a06a05a07a03/Abraham-Lincoln-s-Daily-Devotional-by-Paul-F-Crouch-Sr-.pdf
    • http://muicuiu.dumb1.com/4a03a06a07a01a01/Abraham-Lincoln-Redeemer-President-by-Allen-C-Guelzo.pdf
    • http://muicuiu.dumb1.com/5a09a06a06a05a04/The-Abraham-Lincoln-Joke-Book-by-Beatrice-Schenk-de-Regniers.pdf
    • http://muicuiu.dumb1.com/1a00a03a05a09a07a03/Abraham-Lincoln-Vampire-Hunter-by-Seth-Grahame-Smith.pdf
    • http://muicuiu.dumb1.com/5a01a07a02a00a02/A-Portrait-of-Abraham-Lincoln-in-Letters-by-His-Oldest-Son-by-Paul-M-Angle.pdf
    • http://muicuiu.dumb1.com/1a06a09a07a01a06/Abraham-Lincoln-Vampire-Hunter-by-Seth-Grahame-Smith.pdf
    • http://muicuiu.dumb1.com/4a03a01a07a08a08/Abraham-Lincoln-Vampire-Hunter-by-Seth-Grahame-Smith.pdf

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