Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb43178422c93f5…

MALICIOUS

PDF

16.2 KB Created: 2019-04-30 03:46:32 +01:00 Authoring application: mPDF 5.7
MD5: 1e44e86f9d2cb6449b355eded658fcff SHA-1: a950169c7905af5fda486b7e66599f640dcd52ce SHA-256: 5fb43178422c93f58aa11441d9f1bdea6c7cd892017a83ce9297f5eb61876247
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this file as malicious with high confidence. While the document body is heavily obfuscated, the presence of numerous URLs suggests an attempt to drive traffic to potentially harmful sites, masquerading as legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/2a06a00a04a01a01/Misspelled-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/2a00a03a02a04a08/A-Play-of-Shadow-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/2a03a01a04a01a09/Regeneration-Species-Imperative-3-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/2a03a01a01a02a06/Hidden-in-Sight-Web-Shifters-3-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/2a03a01a01a03a00/Changing-Vision-Web-Shifters-2-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/1a06a02a05a04a02/Polaris-A-Celebration-of-Polar-Science-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/2a03a01a01a03a08/Ties-of-Power-Trade-Pact-Universe-2-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/1a01a00a09a05a08/Tesseracts-Fifteen-A-Case-of-Quite-Curious-Tales-by-Julie-E-Czerneda.pdf
    • http://muicuiu.dumb1.com/6a00a00a09a09a07/Mies-Julie-Based-on-August-Strindberg-s-Miss-Julie-by-Yael-Farber.pdf
    • http://muicuiu.dumb1.com/2a09a03a04a04a09/Julie-amp-Julia-365-days-524-recipes-1-tiny-apartment-kitchen-by-Julie-Powell.pdf
    • http://muicuiu.dumb1.com/1a04a02a05a00a01/Julie-s-Journey-American-Girls-Julie-5-by-Megan-McDonald.pdf
    • http://muicuiu.dumb1.com/1a03a05a05a07a03/Meet-Julie-American-Girls-Julie-1-by-Megan-McDonald.pdf
    • http://muicuiu.dumb1.com/5a03a01a08a06a05/Eventually-Julie-Julie-amp-Friends-1-by-Anthea-Syrokou.pdf
    • http://muicuiu.dumb1.com/1a03a07a02a04/Julie-Julie-of-the-Wolves-2-by-Jean-Craighead-George.pdf
    • http://muicuiu.dumb1.com/1a01a01a02a07a07a00/Julie-Hasler-s-Cross-Stitch-Projects-65-Quick-and-Easy-Designs-Perfect-for-Home-Children-and-Special-Occasions-by-Julie-Hasler.pdf
    • http://muicuiu.dumb1.com/1a01a01a02a05a05a01/Julie-Hasler-s-Fantasy-Cross-Stitch-by-Julie-Hasler.pdf
    • http://muicuiu.dumb1.com/2a06a04a08a07a09/Julie-of-the-Wolves-Julie-of-the-Wolves-1-by-Jean-Craighead-George.pdf
    • http://muicuiu.dumb1.com/5a09a00a09a06a09/Julie-Morgenstern-Organizing-From-The-Inside-Out-Two-Book-Set-by-Julie-Morgenstern.pdf
    • http://muicuiu.dumb1.com/5a00a01a05a01a01/Try-Try-Again-by-Julie-Stone.pdf
    • http://muicuiu.dumb1.com/3a09a01a08a08a09/Without-You-by-Julie-Prestsater.pdf

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