Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cecadfcd5cf8390…

MALICIOUS

PDF

19.8 KB Created: 2019-04-30 03:17:03 +01:00 Authoring application: mPDF 5.7
MD5: f983f831401db518c06d15c273885cc1 SHA-1: 7a39bfcc745c24d800b5852a569d6bf43e6365d9 SHA-256: 8cecadfcd5cf8390f0652c4f2d513b42759932197ab94703e6a693ab1ed436ea
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest a malicious intent, likely for SEO manipulation or to redirect users to malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9472

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/1a00a00a00a04a03a04/Rational-Praise-And-Natural-Lamentation-Johnson-Lycidas-And-Principles-Of-Criticism-by-James-L-Battersby.pdf
    • http://muicuiu.dumb1.com/2a07a09a01a06a05/Principles-of-the-Kingdom-God-s-Success-Principles-by-James-M-Becher.pdf
    • http://muicuiu.dumb1.com/8a02a01a06a06a04/Principles-of-Natural-Hygiene-by-Herbert-M-Shelton.pdf
    • http://muicuiu.dumb1.com/3a09a08a03a00/The-Principia-Mathematical-Principles-of-Natural-Philosophy-by-Isaac-Newton.pdf
    • http://muicuiu.dumb1.com/2a05a02a01a01a06/Let-Us-Now-Praise-Famous-Men-by-James-Agee.pdf
    • http://muicuiu.dumb1.com/1a01a08a07a05a03a04/New-Critical-Essays-on-James-Agee-and-Walker-Evans-Perspectives-on-Let-Us-Now-Praise-Famous-Men-by-Caroline-Blinder.pdf
    • http://muicuiu.dumb1.com/3a07a07a05a06a05/The-Principles-of-Psychology-Vol-1-by-William-James.pdf
    • http://muicuiu.dumb1.com/3a07a08a09a03a08/The-Principles-of-Psychology-Vol-2-by-William-James.pdf
    • http://muicuiu.dumb1.com/8a01a02a01a03a08/Nursing-Care-Of-Children-Principles-And-Practice-by-Susan-Rowen-James.pdf
    • http://muicuiu.dumb1.com/1a00a07a00a06a01/The-Corpse-Rat-King-by-Lee-Battersby.pdf
    • http://muicuiu.dumb1.com/1a01a09a00a06a04/False-Flags-The-Natural-Order-Book-1-by-James-Henry-I.pdf
    • http://muicuiu.dumb1.com/4a02a03a04a06a09/Grow-Your-Own-Drugs-Easy-Recipes-for-Natural-Remedies-and-Beauty-Treats-by-James-Wong.pdf
    • http://muicuiu.dumb1.com/3a04a02a01a00a03/The-Natural-Step-for-Communities-How-Cities-and-Towns-can-Change-to-Sustainable-Practices-by-Sarah-James.pdf
    • http://muicuiu.dumb1.com/4a00a03a01a04a04/The-Creation-by-James-Weldon-Johnson.pdf
    • http://muicuiu.dumb1.com/9a01a06a00a01/The-Creation-by-James-Weldon-Johnson.pdf
    • http://muicuiu.dumb1.com/8a01a03a04a02a04/Tell-Tale-Sophas-Vol-3-of-3-An-Eclectic-Fable-Founded-on-Anecdotes-Foreign-and-Domestic-by-John-Battersby.pdf
    • http://muicuiu.dumb1.com/2a05a03a02a05a09/The-Life-of-Samuel-Johnson-by-James-Boswell.pdf
    • http://muicuiu.dumb1.com/1a01a03a00a05a01a01/Carmack-of-the-Klondike-by-James-Albert-Johnson.pdf
    • http://muicuiu.dumb1.com/5a00a00a02a03a04/The-Autobiography-of-an-Ex-Colored-Man-by-James-Weldon-Johnson.pdf
    • http://muicuiu.dumb1.com/1a03a07a07a03a00/The-Autobiography-of-an-Ex-Colored-Man-by-James-Weldon-Johnson.pdf
    • http://muicuiu.dumb1.com/3a07a08a09a03a08/The-Princi

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