Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc24ad81fa204d94…

MALICIOUS

PDF

14.4 KB Created: 2019-04-30 01:57:29 +01:00 Authoring application: mPDF 5.7
MD5: 70de5bac2ae92c59642c9b8cd2699a59 SHA-1: 8be352611443b2ba81515db4df10bbeda045c675 SHA-256: cc24ad81fa204d942bd4cb40a93e8a455018b12afeee20cb9862f223534eb046
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure itself suggests a malicious intent to redirect users to potentially harmful content hosted on the `muicuiu.dumb1.com` domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/8a06a03a06a00a06/Ender-in-Exile-Ender-s-Saga-6-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a05a05a03a04/Ender-in-Exile-Ender-s-Saga-1-2-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/2a04a05a08a06/Ender-s-Game-Ender-s-Saga-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/8a05a03a04a00a01/Ender-s-Game-Ender-Wiggins-Quartet-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/2a02a00a04a04a01/Ender-s-World-Fresh-Perspectives-on-the-SF-Classic-Ender-s-Game-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/2a02a08a07a02a04/Ender-s-War-The-Ender-Quintet-1-2-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/5a04a05a08a01a06/Children-of-the-Mind-Ender-s-Saga-4-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a03a08a08a01/Children-of-the-Mind-Ender-s-Saga-4-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/6a01a04a04a03a01/Vorbitor-in-numele-mortilor-Saga-lui-Ender-2-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/4a00a02a06a04a05/Ender-s-Shadow-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a02a08a03/Ender-s-Shadow-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a02a06a05a06/Ender-s-Shadow-The-Shadow-Series-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a04a05a08a02a09/Shadow-of-the-Hegemon-Ender-s-Shadow-2-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/5a04a05a07a07a02/Ender-s-Shadow-Shadow-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/4a02a04a06a07a02/Ender-s-Shadow-Shadow-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/4a04a03a00a03a05/Ender-s-Shadow-Shadow-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/5a00a03a04a05/The-Worthing-Saga-Worthing-1-3-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/1a00a07a01a09a07/The-Abyss-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/6a03a00a03a01a02/Enchantement-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a00a08a03a05/Earth-Afire-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a02a08a03/Ende

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