Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dbb1fe12e03b114…

MALICIOUS

PDF

21.4 KB Created: 2019-04-30 02:48:42 +01:00 Authoring application: mPDF 5.7
MD5: da7c216b62263d8e7cf05ba59a9a913b SHA-1: b39f1de5fdf83596190ecfb8986444ce6e11f454 SHA-256: 9dbb1fe12e03b114e923202f7ec2ad982f16330b4d70021374fb1296d7c29b6b
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 technique for SEO poisoning or distributing malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs are likely part of this link farm, aiming to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/8094099099099092/Glass-Flowers-Computer-graphics-made-with-shade-by-Yuki-Deschene.pdf
    • http://loaminoo.linkpc.net/8095090090095091/Cupcake-Soap-Sweets-deco-made-by-soap-by-Yuki-Deschene.pdf
    • http://loaminoo.linkpc.net/8095090090095090/cakesoap-by-Yuki-Deschene.pdf
    • http://loaminoo.linkpc.net/9091091098094098/Mathematical-Elements-for-Computer-Graphics-by-David-F-Rogers.pdf
    • http://loaminoo.linkpc.net/9097098097095094/Fluid-Simulation-for-Computer-Graphics-by-Robert-Bridson.pdf
    • http://loaminoo.linkpc.net/8094098090097/A-Shield-of-Glass-A-Shade-of-Vampire-49-by-Bella-Forrest.pdf
    • http://loaminoo.linkpc.net/5099094096092094/Typing-Made-Easy-Includes-Computer-Usage-by-Diane-Bellavance.pdf
    • http://loaminoo.linkpc.net/7096090097096095/The-Poser-5-Handbook-Graphics-Series-Graphics-Series-by-R-Shamms-Mortier.pdf
    • http://loaminoo.linkpc.net/1097097095095099/A-Wish-Made-of-Glass-by-Ashlee-Willis.pdf
    • http://loaminoo.linkpc.net/7092092091097094/Yuki-in-San-Francisco-Yuki-Furukawa-Photo-book-Japanese-version-by-HoriPro.pdf
    • http://loaminoo.linkpc.net/7092092091093095/Japan-version-YUKI-Be-Natural-Yuki-Furukawa-Photo-book-by-HoriPro.pdf
    • http://loaminoo.linkpc.net/2095098090092094/The-Shade-Garden-Shade-Loving-Plants-for-Year-Round-Interest-by-Beth-Chatto.pdf
    • http://loaminoo.linkpc.net/7090097/A-Shade-of-Doubt-A-Shade-of-Vampire-12-by-Bella-Forrest.pdf
    • http://loaminoo.linkpc.net/1090092097093091098/The-History-of-the-Computer-PC-Peter-s-Computer-Classroom-Book-6-by-Anneline-Kinnear.pdf
    • http://loaminoo.linkpc.net/1090093090098095094/SOFSEM-2004-Theory-and-Practice-of-Computer-Science-30th-Conference-on-Current-Trends-in-Theory-and-Practice-of-Computer-Science-Merin-Czech-Republic-2004-Lecture-Notes-in-Computer-Science-by-Peter-Van-Emde-Boas.pdf
    • http://loaminoo.linkpc.net/1091096090096091098/Watersong-Circle-A-Diary-of-Flowers-An-Anthology-of-Flowers-and-Verse---Second-Edition-by-Tuttle-Publishing.pdf
    • http://loaminoo.linkpc.net/1090097096099099095/Computer-Algebra-in-Scientific-Computing-19th-International-Workshop-CASC-2017-Beijing-China-September-18-22-2017-Proceedings-Lecture-Notes-in-Computer-Science-by-Vladimir-P-Gerdt.pdf
    • http://loaminoo.linkpc.net/1090097097090092090/Computer-Algebra-in-Scientific-Computing-20th-International-Workshop-CASC-2018-Lille-France-September-17-21-2018-Proceedings-Lecture-Notes-in-Computer-Science-by-Vladimir-P-Gerdt.pdf
    • http://loaminoo.linkpc.net/8094099098098096/Tiny-Wisdom-On-Mindfulness-by-Lori-Deschene.pdf
    • http://loaminoo.linkpc.net/1098099094099094/A-Shade-of-Kiev-A-Shade-of-Kiev-1-by-Bella-Forrest.pdf