Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b06da5b4f7c307…

MALICIOUS

PDF

16.5 KB Created: 2019-05-02 01:33:20 +01:00 Authoring application: mPDF 5.7
MD5: 05a7824187c4f269e75fabcf60639797 SHA-1: ea6737055e32fed71f68ea8872ea024ae9f8c8e4 SHA-256: 25b06da5b4f7c307fdf71012cd1f52c3d6725966a17115557c6a416bc2f4b628
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded external links, suggesting a link farm or redirection scheme. The ML classifier also flagged this PDF as malicious with high confidence. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing strongly suggest a malicious intent, likely to lure users to a compromised or malicious site. 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://xiixmcuin.linkpc.net/3206207201208208/The-Fire-Seer-Coalition-Of-Mages-1-by-Amy-Raby.pdf
    • http://xiixmcuin.linkpc.net/4207200201202204/The-Fire-Seer-and-Her-Quradum-Coalition-of-Mages-2-by-Amy-Raby.pdf
    • http://xiixmcuin.linkpc.net/4203209202204200/The-Fire-Mages-Brightmoon-2-by-Pauline-M-Ross.pdf
    • http://xiixmcuin.linkpc.net/2201202205208209/The-Fire-Mages-Brightmoon-2-by-Pauline-M-Ross.pdf
    • http://xiixmcuin.linkpc.net/4207200207201206/Archer-s-Sin-Hearts-And-Thrones-2-5-by-Amy-Raby.pdf
    • http://xiixmcuin.linkpc.net/4207200205208205/Spy-s-Honor-Hearts-and-Thrones-2-by-Amy-Raby.pdf
    • http://xiixmcuin.linkpc.net/3201206204209204/Alfred-Russel-Wallace-A-Life-by-Peter-Raby.pdf
    • http://xiixmcuin.linkpc.net/1201208201203203206/Fire-Stick-The-Ultimate-Guide-With-Instructions-To-Unlock-The-True-Potential-Of-Your-Fire-Stick-Fire-Stick-Book-Fire-Stick-Remote-Streaming-Devices-TV-Stick-User-Guide-How-To-Use-Fire-Stick-by-Jamy-Jackson.pdf
    • http://xiixmcuin.linkpc.net/5200206209208206/The-Coalition-Book-by-Martin-Rowson.pdf
    • http://xiixmcuin.linkpc.net/7201203200206205/La-nuit-des-mages-by-Alain-Beauchemin.pdf
    • http://xiixmcuin.linkpc.net/6203200209203/Coalition-s-End-Gears-of-War-4-by-Karen-Traviss.pdf
    • http://xiixmcuin.linkpc.net/2200201207206202/The-White-Forest-Mages-and-Kingdoms-2-by-Cara-Coe.pdf
    • http://xiixmcuin.linkpc.net/2200201207206208/The-Hidden-Princess-Mages-and-Kingdoms-1-by-Cara-Coe.pdf
    • http://xiixmcuin.linkpc.net/2209204208205200/Doe-and-the-Wolf-Furry-United-Coalition-5-by-Eve-Langlais.pdf
    • http://xiixmcuin.linkpc.net/4200205203202200/Doe-and-the-Wolf-Furry-United-Coalition-5-by-Eve-Langlais.pdf
    • http://xiixmcuin.linkpc.net/3208207204206209/Raider-Coalition-Rebellion-4-by-Justine-Davis.pdf
    • http://xiixmcuin.linkpc.net/2205204206203/The-Skypirate-Coalition-Rebellion-2-by-Justine-Davis.pdf
    • http://xiixmcuin.linkpc.net/2209204208206200/Croc-and-the-Fox-Furry-United-Coalition-3-by-Eve-Langlais.pdf
    • http://xiixmcuin.linkpc.net/2206200202202201/Rory-s-Mate-The-Vampire-Coalition-2-by-J-S-Scott.pdf
    • http://xiixmcuin.linkpc.net/1200208209208201/The-Water-Seer-by-H-M-C-.pdf

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