Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd4f9fb61da6b16…

MALICIOUS

PDF

17.5 KB Created: 2019-04-30 02:44:36 +01:00 Authoring application: mPDF 5.7
MD5: bc964cbf71b238f7f19f7f05bb1efc11 SHA-1: 745f6baa610078a011e42746c1eba773736c9cbc SHA-256: 5bd4f9fb61da6b16813df720ea0732d531c0fe649ae52f10372c71e2c7304171
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, which is a common tactic for SEO manipulation or distributing malicious content. While the specific URLs appear benign, the heuristic 'PDF_SEO_LINK_FARM' indicates a suspicious structure designed to redirect users. The presence of a 'download button' lure further supports a deceptive intent, likely to trick users into navigating to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

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/2a04a03a09a02a09/Wicked-City-Zephyr-Hollis-2-by-Alaya-Dawn-Johnson.pdf
    • http://muicuiu.dumb1.com/2a01a04a02a03a09/Moonshine-Zephyr-Hollis-1-by-Alaya-Dawn-Johnson.pdf
    • http://muicuiu.dumb1.com/2a07a02a08a07/A-Guide-to-the-Fruits-of-Hawai-i-by-Alaya-Dawn-Johnson.pdf
    • http://muicuiu.dumb1.com/2a04a00a01a00a02/Wicked-City-The-Scarlet-Clan-Wicked-City-3-by-Hideyuki-Kikuchi.pdf
    • http://muicuiu.dumb1.com/3a03a02a06a03a02/Zephyr-Phase-One-Zephyr-1-by-Warren-Hately.pdf
    • http://muicuiu.dumb1.com/7a07a08a07a00a04/Shreveport-and-Bossier-City-Photographs-and-Text-by-Neil-Johnson-With-a-Foreword-by-Jim-Montgomery-by-Neil-Johnson.pdf
    • http://muicuiu.dumb1.com/3a02a03a09a06a02/Johnson-s-Life-Of-London-The-People-Who-Made-The-City-That-Made-The-World-by-Boris-Johnson.pdf
    • http://muicuiu.dumb1.com/4a06a09a02a08a05/Practically-Wicked-by-Alissa-Johnson.pdf
    • http://muicuiu.dumb1.com/3a01a05a00a00a06/A-Dawn-Most-Wicked-Something-Strange-and-Deadly-1-5-by-Susan-Dennard.pdf
    • http://muicuiu.dumb1.com/3a00a00a05a08a09/Wicked-Fascination-St-John-Duras-2-by-Susan-Johnson.pdf
    • http://muicuiu.dumb1.com/1a01a03a09a01a00/Wicked-City-by-Ace-Atkins.pdf
    • http://muicuiu.dumb1.com/4a05a00a03a05a03/Just-Before-Dawn-Strong-2-by-Jeannie-Johnson.pdf
    • http://muicuiu.dumb1.com/3a08a07a00a01a02/The-Wicked-City-by-Beatriz-Williams.pdf
    • http://muicuiu.dumb1.com/4a01a04a07a08a01/Right-on-Time-One-Constant-2-by-Dawn-Kimberly-Johnson.pdf
    • http://muicuiu.dumb1.com/1a09a09a01a00a02/What-Happened-to-Larry-Alan-by-Dawn-Kimberly-Johnson.pdf
    • http://muicuiu.dumb1.com/8a07a06a00a03a09/One-in-a-Billion-The-Story-of-Nic-Volker-and-the-Dawn-of-Genomic-Medicine-by-Mark-Johnson.pdf
    • http://muicuiu.dumb1.com/3a09a08a03a08a00/Skullcrack-City-by-Jeremy-Robert-Johnson.pdf
    • http://muicuiu.dumb1.com/2a04a05a04a03a00/Skullcrack-City-by-Jeremy-Robert-Johnson.pdf
    • http://muicuiu.dumb1.com/2a04a07a00a07a01/Le-Theatre-Mecanique-Chroniker-City-2-by-Brooke-Johnson.pdf
    • http://muicuiu.dumb1.com/2a08a08a02a08a06/City-Behind-Fence-Oak-Ridge-Tennessee-1942-1946-by-Charles-W-Johnson.pdf

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