Malicious PDF — malware analysis report

Static analysis result for SHA-256 63211d4a05a4575c…

MALICIOUS

PDF

16.3 KB Created: 2019-04-30 04:20:17 +01:00 Authoring application: mPDF 5.7
MD5: f0fa482693e6ee36ce6ac38c5abc1e83 SHA-1: f7e7b875de88a3d19ce80ba1fd7101b672720f63 SHA-256: 63211d4a05a4575c98057d87971e6a4d67d08f6e7dd5896438e905629a1056df
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, suggesting a tactic to drive traffic or SEO manipulation. While the ML classifier flagged it as malicious, the specific intent beyond link farming is unclear as no executable scripts were found. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/1a01a01a02/Safe-at-Last-Slow-Burn-3-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/3a09a04a02/With-Every-Breath-Slow-Burn-4-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/4a08a06a00a03a01/Just-One-Touch-Slow-Burn-5-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/2a03a01a03a02a05/With-Every-Breath-Slow-Burn-4-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/6a05a07a02a09a07/Slow-Burn-Saison-3-Enfin-r-unis-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/5a08a01a03a05a07/Slow-Burn---saison-2-Sous-ta-protection-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/3a00a09a02a06a08/slow-cooker-recipes-Everyday-Slow-cooker-For-Beginners-Slow-Cooker-Slow-Cooker-Cookbook-Slow-Cooker-Recipes-Slow-Cooking-Slow-Cooker-Meals-Slow-Cooker-pot-recipes-amp-slow-cooker-recipes-Book-3-by-Anna-Scott.pdf
    • http://muicuiu.dumb1.com/2a00a02a01a01a09/Slow-Burn-The-Fitzgerald-Family-1-by-E-B-Walters.pdf
    • http://muicuiu.dumb1.com/4a08a05a04a09a05/Slow-Burn-Buchanan-5-by-Julie-Garwood.pdf
    • http://muicuiu.dumb1.com/4a08a03a03a02a01/Slow-Burn-The-Fitzgerald-Family-1-by-E-B-Walters.pdf
    • http://muicuiu.dumb1.com/6a09a02a06a04a03/Slow-Burn-Impressions-5-by-Talia-Carmichael.pdf
    • http://muicuiu.dumb1.com/7a06a03a05a08a07/Slow-Burn-Sin-City-3-by-Isabel-Morin.pdf
    • http://muicuiu.dumb1.com/4a04a04a08a06a06/Be-with-Me-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/1a00a08a01a08a07/The-Slow-Burn-of-Silence-by-Loreth-Anne-White.pdf
    • http://muicuiu.dumb1.com/4a01a05a06a05a05/The-Slow-Burn-Moonlight-and-Motor-Oil-2-by-Kristen-Ashley.pdf
    • http://muicuiu.dumb1.com/2a09a04a07a02a00/Slow-Burn-Anchor-amp-Sophia-2-by-Tommy-Wallach.pdf
    • http://muicuiu.dumb1.com/1a01a06a09a07/Hidden-Away-KGI-3-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/1a07a02a08a08a02/When-Day-Breaks-KGI-9-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/4a00a05a05a01a01/Wanted-by-Maya-Banks.pdf
    • http://muicuiu.dumb1.com/3a01a04a08a01a05/A-Slow-Burn-Defiance-Texas-Trilogy-2-by-Mary-E-DeMuth.pdf

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