Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f8771da5c3ce1e…

MALICIOUS

PDF

14.5 KB Created: 2019-05-01 09:56:13 +01:00 Authoring application: mPDF 5.7
MD5: e9c0a790118cd30ecf5cef0df280b0c2 SHA-1: 449301d23d93a249f045748ae57af0385711e4f6 SHA-256: 64f8771da5c3ce1e857c98d3b90d0102305405ae070eb779f11084b0b916f258
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to a large collection of external content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/4a04a05a03a04a08/Night-Music-Nocturnes-Volume-Two-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a00a07a06a03a05/Night-Music-Nocturnes-2-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/2a09a02a01a06a06/Nocturnes-Five-Stories-of-Music-and-Nightfall-by-Kazuo-Ishiguro.pdf
    • http://muicuiu.dumb1.com/5a03a05a04a07/Night-Rain-A-Mike-Connolly-Mystery-4-by-Joe-Hilley.pdf
    • http://muicuiu.dumb1.com/6a08a05a05a05/Bad-Men-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a01a04a04a01/Books-to-Die-For-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a07a01a00a00/A-Game-of-Ghosts-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a04a03a06a04a08/The-Black-Angel-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/4a06a01a07a08a00/The-Woman-in-the-Woods-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/2a01a05a05a01a00/The-Book-of-Lost-Things-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a09a03a08a03a04/The-Wanderer-in-Unknown-Realms-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/8a05a03a08a00/The-Book-of-Lost-Things-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/2a03a02a00a03a08/Dominion-The-Chronicles-of-the-Invaders-3-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/6a05a00a08a06a07/Dominion-The-Chronicles-of-the-Invaders-3-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/2a02a01a00a07a06/The-Burning-Soul-Charlie-Parker-10-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/9a07a02a04/A-Game-of-Ghosts-Charlie-Parker-15-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a00a05a01a01a09/Every-Dead-Thing-Charlie-Parker-1-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/1a07a06a05a04a08/The-Wrath-of-Angels-Charlie-Parker-11-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/5a03a02a01a06/Dark-Hollow-Charlie-Parker-2-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/2a02a01a04a07a01/Hell-s-Bells-Samuel-Johnson-vs-the-Devil-Round-II-by-John-Connolly.pdf

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