Malicious PDF — malware analysis report

Static analysis result for SHA-256 90feb5db1951d279…

MALICIOUS

PDF

16.5 KB Created: 2019-04-30 04:00:59 +01:00 Authoring application: mPDF 5.7
MD5: f559d86a1fc4664ef8e12854e816bb9b SHA-1: 9a61f5f47a9f24bb2025dde6f16db2453539aaac SHA-256: 90feb5db1951d2797c4bb555ea900acaec9cf33daec314ed1febbc2af49850f7
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. This technique is often used to distribute malicious content or to engage in SEO poisoning. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

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://muicuiu.dumb1.com/1a09a02a02a04a03/The-Body-Finder-The-Body-Finder-1-by-Kimberly-Derting.pdf
    • http://muicuiu.dumb1.com/3a03a03a09a09/The-Body-Finder-The-Body-Finder-1-by-Kimberly-Derting.pdf
    • http://muicuiu.dumb1.com/1a02a06a08a04a02/The-Last-Echo-The-Body-Finder-3-by-Kimberly-Derting.pdf
    • http://muicuiu.dumb1.com/6a00a01a03a07a05/Body-Finder---tome-2-by-Kimberly-Derting.pdf
    • http://muicuiu.dumb1.com/6a00a01a02a09a00/The-Body-Finder-Pocket-Jeunesse-by-Kimberly-Derting.pdf
    • http://muicuiu.dumb1.com/6a06a09a06a04a01/Finder-Volume-7-The-Rescuers-Finder-7-by-Carla-Speed-McNeil.pdf
    • http://muicuiu.dumb1.com/9a02a09a02a07a07/Finder-Volume-3-One-Wing-in-the-Finder-by-Ayano-Yamane.pdf
    • http://muicuiu.dumb1.com/1a00a07a01a07a06/Witch-Finder-Witch-Finder-1-by-Ruth-Warburton.pdf
    • http://muicuiu.dumb1.com/2a06a09a05a04a09/Is-Your-Body-Trying-to-Tell-You-Something-Why-It-Is-Wise-to-Listen-to-Your-Body-and-How-Massage-and-Body-Work-Can-Help-by-Carmen-Renee-Berry.pdf
    • http://muicuiu.dumb1.com/2a08a09a04a06a02/A-Body-to-Die-for-by-Kimberly-Raye.pdf
    • http://muicuiu.dumb1.com/6a07a02a00a01a07/The-Body-Art-Book-A-Complete-Illustrated-Guide-to-Tattoos-Piercings-and-Other-Body-Modification-by-Jean-Chris-Miller.pdf
    • http://muicuiu.dumb1.com/4a06a08a00a04a03/6-1-2-Body-Parts-Body-Movers-6-5-by-Stephanie-Bond.pdf
    • http://muicuiu.dumb1.com/3a08a06a03a05a05/6-1-2-Body-Parts-Body-Movers-6-5-by-Stephanie-Bond.pdf
    • http://muicuiu.dumb1.com/2a08a04a03a06a06/The-Finder-by-J-E-Lorin.pdf
    • http://muicuiu.dumb1.com/2a04a08a02a01a00/The-Finder-by-Steven-Rome.pdf
    • http://muicuiu.dumb1.com/5a02a09a00a00/Paranoia-by-Joseph-Finder.pdf
    • http://muicuiu.dumb1.com/1a05a05a00a06a01/False-Finder-by-Mia-Hoddell.pdf
    • http://muicuiu.dumb1.com/5a02a05a09a05a00/Finder-s-Fee-by-Alton-Gansky.pdf
    • http://muicuiu.dumb1.com/5a02a03a02a02/Company-Man-by-Joseph-Finder.pdf
    • http://muicuiu.dumb1.com/4a00a01a09a07a00/That-Pet-Finder-Kid---Catnapped-by-Scott-Clements.pdf
    • http://muicuiu.dumb1.com/2a08a09a04a06a02/A-Body-to-Die-for-by-Kimberly-

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