Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e927bfa5c20c330…

MALICIOUS

PDF

19.5 KB Created: 2019-05-02 05:20:34 +01:00 Authoring application: mPDF 5.7
MD5: 236c6df9cb59f43e8f1ed7e5c4a1d5da SHA-1: dfac89deea0ba4e313ac2c110d18b27844b002b4 SHA-256: 2e927bfa5c20c33037926e6ea8eb1f4631a21b6eda1cfd25f8ae2af58ffff61f
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a mass external link farm, with 24 links identified. The ML classifier also strongly indicated maliciousness. While many of the extracted URLs are marked as benign, the sheer volume and the nature of the heuristic firing suggest a malicious intent, likely for SEO manipulation or to distribute further malicious 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://loaminoo.linkpc.net/1091096099091092092/David-Macaulay-s-Pinball-Science-Build-wacky-pinball-games-packed-with-science-facts-and-learning-fun-by-David-Macaulay.pdf
    • http://loaminoo.linkpc.net/1091096099090094099/Pinball-Illustrated-Historical-Guide-To-Pinball-Machines-by-Richard-M-Bueschel.pdf
    • http://loaminoo.linkpc.net/1091096099091092098/Pinball-List-and-Price-Guide-2008-by-Mr-Pinball.pdf
    • http://loaminoo.linkpc.net/1091096099091099091/Pinball-Repair-Directory-by-Bell-Springs-Pinball.pdf
    • http://loaminoo.linkpc.net/1091096099091092096/Pinball-List-and-Price-Guide-2009-by-Mr-Pinball.pdf
    • http://loaminoo.linkpc.net/8098096097097092/A-Century-of-Science-Publishing-A-Collection-of-Essays-by-Einar-H-Fredriksson.pdf
    • http://loaminoo.linkpc.net/1091098095095091096/Jack-Templar-and-the-Monster-Hunter-Academy-The-Templar-Chronicles-2-by-Jeff-Gunhus.pdf
    • http://loaminoo.linkpc.net/1091098095095091094/Jack-Templar-And-The-Lord-Of-The-Werewolves-The-Templar-Chronicles-4-by-Jeff-Gunhus.pdf
    • http://loaminoo.linkpc.net/1091098095095092092/Jack-Templar-And-The-Lord-Of-The-Demons-The-Templar-Chronicles-5-by-Jeff-Gunhus.pdf
    • http://loaminoo.linkpc.net/1091098095095091097/The-Templar-s-Seduction-The-Templar-Knights-3-by-Mary-Reed-McCall.pdf
    • http://loaminoo.linkpc.net/4098097095097095/The-Templar-s-Penance-Knights-Templar-15-by-Michael-Jecks.pdf
    • http://loaminoo.linkpc.net/1090098091093094095/We-Knew-Mary-Baker-Eddy-Fourth-Series-by-Christian-Science-Publishing-Society.pdf
    • http://loaminoo.linkpc.net/1091098095093095093/The-Templar-Cross-Templar-2-by-Paul-Christopher.pdf
    • http://loaminoo.linkpc.net/1099094093099099/The-Last-Templar-Knights-Templar-1-by-Michael-Jecks.pdf
    • http://loaminoo.linkpc.net/1094090098099098/The-Templar-Salvation-Templar-2-by-Raymond-Khoury.pdf
    • http://loaminoo.linkpc.net/1091092097090090091/Opening-Science-The-Evolving-Guide-on-How-the-Internet-Is-Changing-Research-Collaboration-and-Scholarly-Publishing-by-Soenke-Bartling.pdf
    • http://loaminoo.linkpc.net/7091093095091095/Integrated-Aromatic-Medicine-Proceedings-from-the-First-International-Symposium-Held-in-Grasse-France-March-21-22-1998-by-Essential-Science-Publishing.pdf
    • http://loaminoo.linkpc.net/4099093095090094/Templar-Arizona-The-Great-Outdoors-Templar-Arizona-1-by-C-Spike-Trotman.pdf
    • http://loaminoo.linkpc.net/7094095094092092/Science-Projects-for-Kids-Making-Science-Fun-in-10-Minutes-or-Less-21-Science-Experiments-For-Kids-Ages-9---12-by-JoJo-Sabra.pdf
    • http://loaminoo.linkpc.net/1091096098099099092/Pinball-by-David-L-Kuzminski.pdf
    • http://loaminoo.linkpc.net/1091098095095091096

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