Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e849f6789354043…

MALICIOUS

PDF

17.0 KB Created: 2019-04-30 04:04:28 +01:00 Authoring application: mPDF 5.7
MD5: d21ffe40fac0ec837cb6638a1e9bee9e SHA-1: 5b11e3f7971785b295d9df98b03749bb11d6d1c3 SHA-256: 4e849f6789354043386bcabdff78f81f5e606116f277e27e25ce098e4ba6d621
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 links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently marked as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3a01a06a03a02a00/The-Journey-That-Saved-Curious-George-The-True-Wartime-Escape-of-Margret-and-H-A-Rey-by-Louise-Borden.pdf
    • http://muicuiu.dumb1.com/3a01a01a03a09a09/Curious-George-Goes-to-a-Movie-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/1a00a00a05a05a01a01/Curious-George-and-the-Pizza-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/4a05a06a00a05a00/Curious-George-Goes-to-the-Circus-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/5a06a00a05a06a05/Curious-George-at-the-Fire-Station-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/3a09a00a01a07a00/Curious-George-Builds-a-Home-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/9a00a06a05a08/The-Complete-Adventures-of-Curious-George-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/1a00a00a05a05a05a03/Curious-George-and-the-Pizza-Party-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/3a01a01a03a05a09/Curious-George-Makes-Pancakes-by-Margret-Rey.pdf
    • http://muicuiu.dumb1.com/4a04a00a05a09a08/Lonek-s-Journey-The-True-Story-of-a-Boy-s-Escape-to-Freedom-by-Dorit-Bader-Whiteman.pdf
    • http://muicuiu.dumb1.com/1a08a05a09a03a08/Escape-from-Slavery-The-True-Story-of-My-Ten-Years-in-Captivity-and-My-Journey-to-Freedom-in-America-by-Francis-Bok.pdf
    • http://muicuiu.dumb1.com/1a09a06a00a09a04/Sea-Clocks-The-Story-of-Longitude-by-Louise-Borden.pdf
    • http://muicuiu.dumb1.com/4a09a00a07a04/Last-Journey-A-Father-and-Son-in-Wartime-by-Darrell-Griffin-Sr-.pdf
    • http://muicuiu.dumb1.com/4a07a08a07a04a03/Curious-George-Curious-You-On-Your-Way-by-H-A-Rey.pdf
    • http://muicuiu.dumb1.com/6a04a02a05a00/Curious-George-by-H-A-Rey.pdf
    • http://muicuiu.dumb1.com/9a06a07a04a09a07/Curious-George-by-H-A-Rey.pdf
    • http://muicuiu.dumb1.com/2a00a09a01a00a04/Agent-Zigzag-The-True-Wartime-Story-of-Eddie-Chapman-Lover-Betrayer-Hero-Spy-by-Ben-Macintyre.pdf
    • http://muicuiu.dumb1.com/6a07a00a05a05a06/It-s-Ramadan-Curious-George-by-H-A-Rey.pdf
    • http://muicuiu.dumb1.com/4a06a01a02a09a03/Curious-George-Boxcar-Derby-CGTV-8x8-by-H-A-Rey.pdf
    • http://muicuiu.dumb1.com/9a06a00a01a05a07/Curious-George-Carry-Along-Coloring-Kit-by-Laura-Floss.pdf
    • http://muicuiu.dumb1.com

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