Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b140ac3fe2ead1…

MALICIOUS

PDF

18.5 KB Created: 2019-04-30 02:46:28 +01:00 Authoring application: mPDF 5.7
MD5: ec7aa2b09b401a3ef36e5818f27c4298 SHA-1: cb6d0ded2529ba2f753b964f5e2a42edc14f4f45 SHA-256: 10b140ac3fe2ead1451918c365c40347eac9b52cb31e6dbf2fbfdee5e17752a6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that point to external PDF files, indicative of a link farm or SEO poisoning tactic. While the ML classifier strongly flagged this as malicious, the specific intent beyond link distribution is unclear. No scripts were extracted, and the document body was heavily corrupted, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/3a05a00a04a02a02/Wounded-by-Percival-Everett.pdf
    • http://muicuiu.dumb1.com/2a02a01a04a05a02/Assumption-by-Percival-Everett.pdf
    • http://muicuiu.dumb1.com/6a05a01a04a06/Erasure-by-Percival-Everett.pdf
    • http://muicuiu.dumb1.com/4a07a02a03a02a05/Watershed-Love-Where-You-Roam-1-by-C-D-Brennan.pdf
    • http://muicuiu.dumb1.com/5a07a06a04a05/Watershed-Adventures-of-a-Water-Bottle-by-Jennifer-Chambers.pdf
    • http://muicuiu.dumb1.com/6a06a04a04a04a08/Good-Gestes-by-Percival-C-Wren.pdf
    • http://muicuiu.dumb1.com/7a09a08a04a06a00/The-Role-of-Forest-Humus-in-Watershed-Management-in-New-England-by-G-R-Trimble-Jr.pdf
    • http://muicuiu.dumb1.com/2a02a08a04a04a01/Of-Pandas-amp-People-by-Percival-William-Davis.pdf
    • http://muicuiu.dumb1.com/4a00a09a01a09a06/The-Lost-Continent-The-Myth-Hunter-1-by-Percival-Constantine.pdf
    • http://muicuiu.dumb1.com/3a04a03a01a04a05/The-Return-of-Sir-Percival-Guinevere-s-Prayer-by-S-Alexander-O-39-Keefe.pdf
    • http://muicuiu.dumb1.com/4a04a07a02a00a04/Peachtree-Creek-A-Natural-and-Unnatural-History-of-Atlanta-s-Watershed-by-David-R-Kaufman.pdf
    • http://muicuiu.dumb1.com/1a01a09a04a08a08a01/Pippa-and-Percival-Pancake-and-Poppy-Four-Peppy-Puppies-by-Deborah-Diesen.pdf
    • http://muicuiu.dumb1.com/7a06a04a09a00a06/Culturing-Wilderness-in-Jasper-National-Park-Studies-in-Two-Centuries-of-Human-History-in-the-Upper-Athabasca-River-Watershed-by-I-S-MacLaren.pdf
    • http://muicuiu.dumb1.com/8a03a05a00a04a08/Water-Quality-of-the-Chokosna-Gilahina-Lakina-Rivers-and-Long-Lake-Watershed-Along-McCarthy-Road-Wrangell--St-Elias-National-Park-and-Preserve-Alaska-2007-08-by-Timothy-P-Brabets.pdf
    • http://muicuiu.dumb1.com/4a08a06a00a08a04/Everyone-We-ve-Been-by-Sarah-Everett.pdf
    • http://muicuiu.dumb1.com/3a01a07a00a01a03/Laid-Out-and-Candle-Lit-by-Ann-Everett.pdf
    • http://muicuiu.dumb1.com/9a07a09a05a00/Take-You-Apart-The-Everett-Files-1-by-T-J-Spade.pdf
    • http://muicuiu.dumb1.com/4a00a09a06a05a04/Two-if-By-Sea-by-Leonard-Everett-Fisher.pdf
    • http://muicuiu.dumb1.com/2a00a05a06a06a00/The-Last-Free-Men-by-Jack-Everett.pdf
    • http://muicuiu.dumb1.com/3a04a07a05a06a01/Love-Carry-My-Bags-by-C-R-Everett.pdf

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