Malicious PDF — malware analysis report

Static analysis result for SHA-256 e103164ff65a78e7…

MALICIOUS

PDF

15.8 KB Created: 2019-04-30 18:56:47 +01:00 Authoring application: mPDF 5.7
MD5: fccf2e8f5fb6ea95956439c052a169ed SHA-1: dd582b57197ab988087cadc9e1e6d098f94217e7 SHA-256: e103164ff65a78e7e6401a9c34b2e48bf8bfe6d510c15f86f46a54c854ee8678
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic identified a link farm structure. While the extracted URLs are currently marked as benign, the overall structure and heuristic firings suggest a malicious intent, likely to lure users to a compromised or malicious host. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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/3a07a01a01a03a01/Running-Wild-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/1a09a04a09a09a06/Temporary-High-Running-On-Empty-2-by-Colette-Ballard.pdf
    • http://muicuiu.dumb1.com/1a00a06a08a00a09/Running-Wild-by-Denise-Eagan.pdf
    • http://muicuiu.dumb1.com/2a07a08a05a00a06/Running-Wild-Northern-Shifters-4-by-Joely-Skye.pdf
    • http://muicuiu.dumb1.com/1a07a07a06a07a05/Running-Wild-The-Men-from-Battle-Ridge-1-by-Linda-Howard.pdf
    • http://muicuiu.dumb1.com/8a09a04a04a07a07/Running-Wild-Upchuck-and-the-Rotten-Willy-by-Bill-Wallace.pdf
    • http://muicuiu.dumb1.com/3a07a00a05a05a09/Bobbed-Hair-and-Bathtub-Gin-Writers-Running-Wild-in-the-Twenties-by-Marion-Meade.pdf
    • http://muicuiu.dumb1.com/6a00a02a09a09/The-Complete-Stories-of-J-G-Ballard-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/2a05a00a09a02a07/Mindful-Running-How-Meditative-Running-can-Improve-Performance-and-Make-you-a-Happier-More-Fulfilled-Person-by-MacKenzie-L-Havey.pdf
    • http://muicuiu.dumb1.com/2a05a01a07a01a04/Running-With-the-Devil-Running-1-by-Lorelei-James.pdf
    • http://muicuiu.dumb1.com/2a05a00a08a09a07/Barefoot-Running-Step-by-Step-Barefoot-Ken-Bob-The-Guru-of-Shoeless-Running-Shares-His-Personal-Technique-by-Roy-Wallack.pdf
    • http://muicuiu.dumb1.com/3a05a06a06a07/Crash-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/4a03a08a01a08a08/The-Day-Of-Creation-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/4a08a04a07a00a00/War-Fever-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/3a06a06a02a02/High-Rise-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/4a06a07a07a04a01/The-Watchers-by-Jeffrey-A-Ballard.pdf
    • http://muicuiu.dumb1.com/9a05a02a08a07a05/Welt-in-Flammen-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/1a06a04a01a04a07/Passport-To-Eternity-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/1a06a00a07a06a04/The-Voices-Of-Time-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/1a05a04a01a07a09/The-Drowned-World-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/2a05a00a08a09a07/Barefoot

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