Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc0e245baefff95…

MALICIOUS

PDF

16.4 KB Created: 2019-04-29 23:35:44 +01:00 Authoring application: mPDF 5.7
MD5: 46f5a7620417039c0b8969b9dcc76309 SHA-1: 205b6edbdd271a78d3d82d99ab018a0eace94fc6 SHA-256: 9fc0e245baefff954c697cf5e611784e52fe6cff9baf6e5cebd20ef38e499e0f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the ML classifier flagged it as malicious, the specific URLs extracted were confirmed as benign. No scripts were extracted from this sample. The primary attack pattern appears to be the creation of a link farm within the PDF, potentially for SEO manipulation or to serve as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/9a04a07a08a08a06/Disney-Manga-Tim-Burton-s-The-Nightmare-Before-Christmas-Zero-s-Journey-Issue-3-by-Tim-Burton.pdf
    • http://muicuiu.dumb1.com/1a07a02a00a00a06/Tim-Burton-s-The-Nightmare-Before-Christmas-by-Tim-Burton.pdf
    • http://muicuiu.dumb1.com/7a09a04a09a06/Tim-Burton-s-Corpse-Bride-The-Illustrated-Story-by-Tim-Burton.pdf
    • http://muicuiu.dumb1.com/7a06a00a00a05a02/Christmas-in-Purgatory-A-Photographic-Essay-on-Mental-Retardation-by-Burton-Blatt.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a06a04a02/Romantic-Christmas---Denn-entkommen-wirst-du-nicht-by-Mary-Burton.pdf
    • http://muicuiu.dumb1.com/4a05a05a09a07a04/Holiday-Kisses-This-Time-Next-Year-A-Rare-Gift-It-s-Not-Christmas-Without-You-Mistletoe-and-Margaritas-Holloway-1-by-Jaci-Burton.pdf
    • http://muicuiu.dumb1.com/9a04a07a08a07a07/The-Nightmare-Before-Christmas-Zero-s-Journey-0-FCBD-2018-by-D-J-Milky.pdf
    • http://muicuiu.dumb1.com/4a07a05a03a06a07/The-Richard-Burton-Diaries-by-Richard-Burton.pdf
    • http://muicuiu.dumb1.com/5a00a03a01a03a08/Winnie-the-Pooh-s-Christmas-Stories-Disney-s-Big-Book-by-Walt-Disney-Company.pdf
    • http://muicuiu.dumb1.com/1a02a03a07a00a00/Quiet-Ops-by-Bob-Burton.pdf
    • http://muicuiu.dumb1.com/3a06a08a07a01a04/Swingers-2-by-Darren-G-Burton.pdf
    • http://muicuiu.dumb1.com/1a00a09a04a03a05a03/Flaw-Less-by-Shana-Burton.pdf
    • http://muicuiu.dumb1.com/2a09a05a06a09a00/Caught-in-the-Act-by-Darren-G-Burton.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a07/The-Miniaturist-by-Jessie-Burton.pdf
    • http://muicuiu.dumb1.com/3a00a01a00a07a08/Unraveled-by-Jaci-Burton.pdf
    • http://muicuiu.dumb1.com/7a07a09a04a03a05/On-Being-Certain-Believing-You-Are-Right-Even-When-You-re-Not-by-Robert-A-Burton.pdf
    • http://muicuiu.dumb1.com/2a01a06a06a07a01/The-Many-Colours-of-Us-by-Rachel-Burton.pdf
    • http://muicuiu.dumb1.com/1a04a00a07a08a00/She-Inserts-the-Key-by-Marianne-Burton.pdf
    • http://muicuiu.dumb1.com/2a05a03a03a09a03/Nothing-Personal-by-Jaci-Burton.pdf
    • http://muicuiu.dumb1.com/3a07a07a03/Don-t-Let-Go-Hope-6-by-Jaci-Burton.pdf
    • http://muicuiu.dumb1.com/4a07a05a03a06a07/The-Richard-B

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