Malicious PDF — malware analysis report

Static analysis result for SHA-256 064bdb26cca1b781…

MALICIOUS

PDF

16.8 KB Created: 2019-04-29 23:22:56 +01:00 Authoring application: mPDF 5.7
MD5: 18c2e537d4c6b1439d87dee9b1378d9f SHA-1: 0294368d3798327f8eef0bcce4ea7abff5739314 SHA-256: 064bdb26cca1b7811a1beac2fb3de69afff585aa7913f7b7a5be45717c81e6fc
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, suggesting a deceptive attempt to redirect users. The heuristic 'SE_DOWNLOAD_BUTTON' indicates the presence of visual download lures within the document body. While no scripts were extracted, the ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into navigating to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/3a07a04a00a06a02/Thought-Bubble-1-by-Duncan-Fegredo.pdf
    • http://muicuiu.dumb1.com/7a06a01a03a09a05/Thought-Bubble-Anthology-2017-6-by-Cecil-Castellucci.pdf
    • http://muicuiu.dumb1.com/1a00a01a04a08a02a06/The-Castle-in-the-Bubble-Magic-Bubble-Wand-1-by-Lori-Forrest.pdf
    • http://muicuiu.dumb1.com/3a07a01a08a06a07/The-Adventures-of-Mister-Bubble---Mister-Bubble-and-the-Greedy-Triplets-Colour-It-Yourself-Edition-by-Luke-Mathius-Harlow.pdf
    • http://muicuiu.dumb1.com/1a01a02a02a04a05/Bubble-Gum-Bubble-Gum-by-Lisa-Wheeler.pdf
    • http://muicuiu.dumb1.com/6a08a08a04a08a02/The-Last-Fancy-Dan-The-Duncan-Mc-Kenzie-Story-by-Duncan-McKenzie.pdf
    • http://muicuiu.dumb1.com/7a03a08a00a08a02/Best-Thought-Worst-Thought-Aphorisms-on-Art-Sex-Work-and-Death-by-Don-Paterson.pdf
    • http://muicuiu.dumb1.com/2a05a08a05a05a08/The-Bubble-Gum-Thief-by-Jeff-Miller.pdf
    • http://muicuiu.dumb1.com/2a02a00a03a03a05/Hubble-Bubble-by-Jane-Lovering.pdf
    • http://muicuiu.dumb1.com/1a00a08a03a04a05a05/The-Glass-Bubble-by-Maruo-Heribe.pdf
    • http://muicuiu.dumb1.com/4a01a06a04a06a09/The-Bubble-Tree-by-Josie-Moon.pdf
    • http://muicuiu.dumb1.com/4a08a05a04a07a05/The-Broken-Bubble-by-Philip-K-Dick.pdf
    • http://muicuiu.dumb1.com/2a03a07a04a09a01/Out-of-the-Bubble-by-Shelby-McGrath-Myers.pdf
    • http://muicuiu.dumb1.com/8a02a06a07a00a07/Bow-Wow-From-Post-City-Bubble-by-Yoshiharu-Tsukamato.pdf
    • http://muicuiu.dumb1.com/3a04a01a09a06a04/The-Boy-Who-Invented-the-Bubble-Gun-An-Odyssey-of-Innocence-by-Paul-Gallico.pdf
    • http://muicuiu.dumb1.com/6a04a04a04a03a02/Saphir-lives-in-a-bubble-by-Nathalie-Deh-e-Marot.pdf
    • http://muicuiu.dumb1.com/1a00a09a05a02a03a03/The-Higher-Education-Bubble-by-Glenn-Harlan-Reynolds.pdf
    • http://muicuiu.dumb1.com/4a03a02a07a09a08/The-Bubble-Gum-Thief-Dagny-Gray-Book-1-by-Jeff-Miller.pdf
    • http://muicuiu.dumb1.com/3a07a00a06a07a01/Mister-Bubble-and-the-Thoughtless-Children-by-Luke-Mathius-Harlow.pdf
    • http://muicuiu.dumb1.com/3a06a00a08a00a07/Republican-Like-Me-How-I-Left-the-Liberal-Bubble-and-Learned-to-Love-the-Right-by-Ken-Stern.pdf

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