Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c15025c4fc34b8…

MALICIOUS

PDF

13.8 KB Created: 2019-05-02 00:50:48 +01:00 Authoring application: mPDF 5.7
MD5: 6045b527b41fd6577731f8060906fad9 SHA-1: e249c03a3161a37bfe1920bba28d7fa241364940 SHA-256: f6c15025c4fc34b896246be0645ad4ec3816b37da9202db79f3296572f2e06be
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this document as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/3a00a09a08a04a08/The-Wicked-Bad-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/6a09a06a06a06a09/That-Christmas-Feeling-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/6a09a06a05a07a03/Christmas-Memories-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/4a06a06a06a08a04/The-Baron-and-the-Mistress-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/6a09a06a05a08a01/Summer-Heat-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/6a09a06a05a07a06/Black-Heart-Blackthorne-Clan-3-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/6a01a04a06a05a03/Marriage-with-a-Proper-Stranger-Men-of-Wollstonecraft-Hall-1-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/6a01a04a06a07a07/Scandal-with-a-Sinful-Scot-Men-of-Wollstonecraft-Hall-2-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/4a03a08a09a03a01/Timeless-Heart-Timeless-Hearts-1-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/3a00a09a08a04a07/A-Riding-Crop-for-Two-Riding-Crop-2-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/2a00a08a02a01a03/The-Riding-Crop-Riding-Crop-1-by-Karyn-Gerrard.pdf
    • http://muicuiu.dumb1.com/2a06a07a07a03a08/Gerrard-My-Autobiography-by-Steven-Gerrard.pdf
    • http://muicuiu.dumb1.com/4a01a03a08a09a08/Cowboy-Sandwich-Cowboy-Sandwich-1-by-Drew-Hunt.pdf
    • http://muicuiu.dumb1.com/9a08a06a01a09/Prelude-to-a-Hero-Chronicles-of-a-Hero-1-by-Jaime-Buckley.pdf
    • http://muicuiu.dumb1.com/3a04a09a01a05a07/Hero-in-the-Highlands-No-Ordinary-Hero-1-by-Suzanne-Enoch.pdf
    • http://muicuiu.dumb1.com/4a01a04a08a09a09/Her-Forbidden-Hero-The-Hero-1-by-Laura-Kaye.pdf
    • http://muicuiu.dumb1.com/9a01a03a08a00/Resenting-the-Hero-Hero-1-by-Moira-J-Moore.pdf
    • http://muicuiu.dumb1.com/5a06a09a00a02/One-Night-with-a-Hero-The-Hero-2-by-Laura-Kaye.pdf
    • http://muicuiu.dumb1.com/6a04a06a03a08a01/This-Sandwich-Has-No-Mayonnaise-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/1a07a08a06a04a03/There-Exists-an-X-X-is-a-Sandwich-by-Joel-K-Jensen.pdf
    • http://muicuiu.dumb1.com/4a01a03a08a09a08/Cowboy-Sandwich-Cowboy-Sand

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