Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deedcabf72d2525…

MALICIOUS

PDF

17.2 KB Created: 2019-04-30 01:56:06 +01:00 Authoring application: mPDF 5.7
MD5: 2db0d596ea003c74e04eb61ccf598d17 SHA-1: 671afc8630bf53912a9fdab8df52ddea131d2f21 SHA-256: 4deedcabf72d25256dccc68c0e251454730c3130b2193463cc1f25acabe62668
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to external PDF files. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs, while appearing benign in isolation, are part of a link farm strategy to potentially distribute further malicious content or engage in SEO abuse. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/8a02a04a01a08a01/Lovecraft-s-Legacy-A-Centennial-Celebration-of-H-P-Lovecraft-by-Robert-E-Weinberg.pdf
    • http://muicuiu.dumb1.com/1a05a05a04a04a08/The-Complete-Works-of-H-P-Lovecraft-Volume-1-70-Horror-Short-Stories-Novels-and-Juvenilia-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a05a05a03a02a06/The-Complete-Works-of-H-P-Lovecraft-102-Horror-Short-Stories-Novels-Juvenelia-Collaborations-and-Ghost-Writings-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/3a08a07a00a09a03/The-Lovecraft-Library-Volume-1-Horror-Out-of-Arkham-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/5a03a06a03a09/Black-Seas-of-Infinity-The-Best-of-H-P-Lovecraft-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/3a07a09a00a02a05/The-Lovecraft-Anthology-Volume-2-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a01a00a09a01a05a02/Chilling-Tales-of-HP-Lovecraft-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/6a00a03a05a06a06/The-Definitive-H-P-Lovecraft-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/8a02a04a01a04a07/The-New-Lovecraft-Circle-by-Robert-M-Price.pdf
    • http://muicuiu.dumb1.com/2a06a06a07a09/Tarzan-The-Centennial-Celebration-The-Stories-The-Movies-The-Art-by-Scott-Tracy-Griffin.pdf
    • http://muicuiu.dumb1.com/6a03a08a04a08a06/Diocese-of-Southwark-1905-2005-A-Centennial-Celebration-by-Revd-Antony-Hurst.pdf
    • http://muicuiu.dumb1.com/1a05a08a03a07a04/The-Other-Gods-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/2a08a09a00a09a08/The-Book-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/2a02a09a07a07a02/Cool-Air-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a08a05a07a01a02/The-Unnamable-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a06a04a07a02a05/The-Temple-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a08a05a07a01a05/The-Festival-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/2a02a09a07a06a05/Dagon-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a08a05a07a01a07/Celepha-s-by-H-P-Lovecraft.pdf
    • http://muicuiu.dumb1.com/1a06a04a03a02a06/Polaris-by-H-P-Lovecraft.pdf

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