Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d6865f2ac9995f…

MALICIOUS

PDF

15.0 KB Created: 2019-04-30 06:50:31 +01:00 Authoring application: mPDF 5.7
MD5: 2f6a672184b7e2f7a2158b2d2de8d016 SHA-1: 6105619d0d0e0012cefd939131f22a64139bb700 SHA-256: 77d6865f2ac9995fb400f139a21ea7fc41112dc2abcac1312ecd23bb2b22299f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to manipulate search engine results or lure users to potentially harmful sites. The ML classifier also flagged this PDF as malicious.

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/9a09a07a07a01a05/The-Things-Everson-Lost-The-Blackstone-Family-Book-3-by-Tina-Martin.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/4a06a01a07a08a00/The-Woman-in-the-Woods-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a04a03a06a04a08/The-Black-Angel-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/3a09a03a08a03a04/The-Wanderer-in-Unknown-Realms-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/3a00a07a06a03a05/Night-Music-Nocturnes-2-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/4a04a05a03a04a08/Night-Music-Nocturnes-Volume-Two-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/9a07a02a04/A-Game-of-Ghosts-Charlie-Parker-15-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/5a03a02a01a06/Dark-Hollow-Charlie-Parker-2-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/2a02a01a00a07a06/The-Burning-Soul-Charlie-Parker-10-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/8a06a03a02a05a06/Things-That-Go-Zoom-a-Finger-Puppet-Book-About-Opposites-A-Finger-Puppet-Book-About-Opposites-by-John-Wallner.pdf
    • http://muicuiu.dumb1.com/2a02a01a04a07a01/Hell-s-Bells-Samuel-Johnson-vs-the-Devil-Round-II-by-John-Connolly.pdf
    • http://muicuiu.dumb1.com/1a09a05a06a04a06/The-Secret-of-Lost-Things-by-Sheridan-Hay.pdf
    • http://muicuiu.dumb1.com/3a02a06a02a04a09/The-Lost-and-the-Chosen-The-Lost-Sentinel-Book-1-by-Ivy-Asher.pdf

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