Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ced0cb4415794d…

MALICIOUS

PDF

16.8 KB Created: 2019-04-28 09:13:28 +01:00 Authoring application: mPDF 5.7
MD5: 9a3e915b0535f28af685f1502c45f842 SHA-1: e5369b1aaa7945420da8ab8af0155ecf8930a83e SHA-256: 49ced0cb4415794d119c74c9e3c736c6e31e142ce67b531b45d44956d273a702
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged the PDF as malicious, the specific intent appears to be link farming rather than direct payload delivery. The extracted URLs, though numerous, are not directly indicative of malicious activity based on their labels, but the sheer volume and the heuristic's classification suggest a deceptive purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/1a09a02a03a00a07/Herbie-s-Game-Junior-Bender-4-by-Timothy-Hallinan.pdf
    • http://muicuiu.dumb1.com/8a00a02a09a09a01/Crashed-Junior-Bender-1-by-Timothy-Hallinan.pdf
    • http://muicuiu.dumb1.com/1a06a08a05a03/The-Queen-of-Patpong-by-Timothy-Hallinan.pdf
    • http://muicuiu.dumb1.com/3a09a09a07a09a05/The-Fourth-Watcher-Poke-Rafferty-Mystery-2-by-Timothy-Hallinan.pdf
    • http://muicuiu.dumb1.com/4a02a09a08a04a05/Mental-Toughness-Understanding-the-Game-of-Life-by-Timothy-S-Wakefield.pdf
    • http://muicuiu.dumb1.com/1a01a07a07a01a08a07/Herbie-Jones-and-the-Dark-Attic-Herbie-Jones-6-by-Suzy-Kline.pdf
    • http://muicuiu.dumb1.com/9a02a04a01a04a05/Inner-Game-Stress-Wie-Sie-gr-ere-innere-Stabilit-t-gewinnen-um-die-Herausforderungen-des-Lebens-bew-ltigen-zu-k-nnen-by-W-Timothy-Gallwey.pdf
    • http://muicuiu.dumb1.com/2a05a08a05a09a05/How-Do-I-Love-You-by-P-K-Hallinan.pdf
    • http://muicuiu.dumb1.com/3a01a02a06a07a05/How-Do-I-Love-You-by-P-K-Hallinan.pdf
    • http://muicuiu.dumb1.com/2a02a06a04a07a03/Why-We-Make-Mistakes-How-We-Look-Without-Seeing-Forget-Things-in-Seconds-and-Are-All-Pretty-Sure-We-Are-Way-Above-Average-by-Joseph-T-Hallinan.pdf
    • http://muicuiu.dumb1.com/1a04a07a09a06/Refund-by-Karen-E-Bender.pdf
    • http://muicuiu.dumb1.com/4a01a01a09a06a00/Bender-by-Gene-Gant.pdf
    • http://muicuiu.dumb1.com/4a07a07a02a08a04/Three-Men-on-a-Bender-by-Patrick-Rossi.pdf
    • http://muicuiu.dumb1.com/4a01a02a09a02a09/An-Invisible-Sign-of-My-Own-by-Aimee-Bender.pdf
    • http://muicuiu.dumb1.com/4a00a03a09a02a07/Forgotten-Sweethearts-by-Melissa-Bender.pdf
    • http://muicuiu.dumb1.com/1a01a04a00a01a02/Giraffe-and-Bird-by-Rebecca-Bender.pdf
    • http://muicuiu.dumb1.com/6a08a00a09a04a04/I-Am-the-Elephant-in-the-Room-by-Jack-Bender.pdf
    • http://muicuiu.dumb1.com/2a04a01a07a04a09/An-Invisible-Sign-of-My-Own-by-Aimee-Bender.pdf
    • http://muicuiu.dumb1.com/1a01a07a07a02a02a06/The-Atlantis-Enigma-by-Herbie-Brennan.pdf
    • http://muicuiu.dumb1.com/1a01a07a07a02a07a04/Herbie-Capleenies-by-Joseph-B-Bopp.pdf
    • http://muicuiu.dumb1.com/2a02a06a04a07a03/Why-We-Make-Mistakes-How-We-Look-Without-Seeing-Forget-Things-in-Seconds-and-Are-All-Pr

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