Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae99bc3b62a15ec…

MALICIOUS

PDF

16.8 KB Created: 2019-04-30 05:19:28 +01:00 Authoring application: mPDF 5.7
MD5: 00650550749f8840c88f2fe4795aee05 SHA-1: 7956dbd8e64a11ac2c62cd4617eb684bd0ea26b7 SHA-256: 7ae99bc3b62a15ec9a8d4d4be3b887d5ab6401b9b87ca530231c0f683471597f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external PDF documents. While the ML classifier strongly indicates maliciousness, the specific intent beyond link farming is unclear due to the lack of readable document body text. The embedded URLs are the primary IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/7093097099094091/Running-Is-Flying-Aphorisms-Meditations-and-Thoughts-on-a-Running-Life-by-Paul-E-Richardson.pdf
    • http://loaminoo.linkpc.net/1091090097099098092/Running-Run-Yourself-Slim-The-Daily-Running-Habit-for-Healthy-Weight-Loss-Without-Dieting-and-Drugs-Running-Slimming-Run-Losing-Weight-by-Emily-Darin.pdf
    • http://loaminoo.linkpc.net/1090092096090094099/Running-Jargon-Explained-An-Expanded-A-to-Z-of-Running-Terms-by-Alan-Seel.pdf
    • http://loaminoo.linkpc.net/1090092096090095096/My-Running-Years-A-Personal-Story-of-Running-Experiences-by-Alan-Seel.pdf
    • http://loaminoo.linkpc.net/1090092095098099096/Running-a-5k-How-to-Start-Running-and-complete-a-5k-Race-in-8-weeks-by-Alan-Seel.pdf
    • http://loaminoo.linkpc.net/1090092096091095095/Running-Together-A-Trilogy-of-Books-about-Running-by-Alan-Seel.pdf
    • http://loaminoo.linkpc.net/2095091097091094/Running-With-the-Devil-Running-1-by-Lorelei-James.pdf
    • http://loaminoo.linkpc.net/1091097099090094/Among-the-Jimson-Weeds-Running-Nowhere-1-by-Paul-Keene.pdf
    • http://loaminoo.linkpc.net/3090096093098098/14-Minutes-A-Running-Legend-s-Life-and-Death-and-Life-by-Alberto-Salazar.pdf
    • http://loaminoo.linkpc.net/6094090093/Running-into-Love-Fluke-My-Life-1-by-Aurora-Rose-Reynolds.pdf
    • http://loaminoo.linkpc.net/2099093096090/A-River-Running-West-The-Life-of-John-Wesley-Powell-by-Donald-Worster.pdf
    • http://loaminoo.linkpc.net/7093098090096097/On-Thoughts-and-Aphorisms-by-The-Mother.pdf
    • http://loaminoo.linkpc.net/2091096091094/Interglacial-New-and-Selected-Poems-amp-Aphorisms-by-James-Richardson.pdf
    • http://loaminoo.linkpc.net/5094096092096091/Meditations-Thoughts-to-Myself-by-Marcus-Aurelius.pdf
    • http://loaminoo.linkpc.net/9094099095099/Morning-Thoughts-and-Meditations-by-Robert-A-Searles.pdf
    • http://loaminoo.linkpc.net/1091092093094093/Fox-Running-by-R-R-Knudson.pdf
    • http://loaminoo.linkpc.net/1094095096095093/Running-by-H-Carlin.pdf
    • http://loaminoo.linkpc.net/5091091091099092/Keep-On-Running-by-Ted-Harriott.pdf
    • http://loaminoo.linkpc.net/1097095099098092/Running-Wild-by-J-G-Ballard.pdf
    • http://loaminoo.linkpc.net/6098090092097/The-Running-Man-by-Richard-Bachman.pdf

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