Malicious PDF — malware analysis report

Static analysis result for SHA-256 b632253faa3be48a…

MALICIOUS

PDF

14.2 KB Created: 2019-05-02 01:30:39 +01:00 Authoring application: mPDF 5.7
MD5: 25defe16f980d3d5eddcf114faa0ff28 SHA-1: a1625c9065943b547f72d72b757549d51db233ef SHA-256: b632253faa3be48a3ce6e34492e7a17138c1f1e58fb8ba557c180ca3dbceb18a
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external websites, identified as a 'PDF_SEO_LINK_FARM' heuristic. While most individual links are 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. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9200

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/1a01a00a08a07a06a00/While-Snowbound-by-Anna-J-McIntyre.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a08a03a00/Coulson-s-Secret-The-Coulson-Series-4-by-Anna-J-McIntyre.pdf
    • http://muicuiu.dumb1.com/1a01a05a02a08a08/Snowbound-by-Bill-Pronzini.pdf
    • http://muicuiu.dumb1.com/4a00a08a01a02a07/Snowbound-by-Blake-Crouch.pdf
    • http://muicuiu.dumb1.com/1a01a00a04a02/Snowbound-by-Janice-Kay-Johnson.pdf
    • http://muicuiu.dumb1.com/3a03a02a04a01a04/Snowbound-by-Scarlet-Blackwell.pdf
    • http://muicuiu.dumb1.com/2a04a02a06a06a07/Snowbound-With-Betsy-by-Carolyn-Haywood.pdf
    • http://muicuiu.dumb1.com/1a00a00a04a03a04a02/Snowbound-Seduction-by-Melissa-Schroeder.pdf
    • http://muicuiu.dumb1.com/2a05a02a06a03/Snowbound-in-the-Earl-s-Castle-by-Fiona-Harper.pdf
    • http://muicuiu.dumb1.com/3a07a03a04a00a03/Snowbound-in-Montana-Carrigans-of-the-Circle-C-4-by-C-J-Carmichael.pdf
    • http://muicuiu.dumb1.com/2a02a05a01a03a05/Snowbound-with-a-Billionaire-Cowboy-by-Alexia-Wells.pdf
    • http://muicuiu.dumb1.com/3a07a03a00a07a02/Snowbound-Wedding-Wishes-An-Earl-Beneath-the-Mistletoe-Twelfth-Night-Proposal-Christmas-at-Oakhurst-Manor-by-Louise-Allen.pdf
    • http://muicuiu.dumb1.com/5a04a03a04a05/Before-Now-Sometimes-Never-2-by-Cheryl-McIntyre.pdf
    • http://muicuiu.dumb1.com/3a01a09a05a09a02/Me-and-Mr-J-by-Rachel-McIntyre.pdf
    • http://muicuiu.dumb1.com/3a02a07a01a08a01/Me-and-Mr-J-by-Rachel-McIntyre.pdf
    • http://muicuiu.dumb1.com/4a08a03a00a04a07/Anna-Dressed-in-Blood-Anna-1-by-Kendare-Blake.pdf
    • http://muicuiu.dumb1.com/1a00a07a02a02a04/Anna-Dressed-in-Blood-Anna-1-by-Kendare-Blake.pdf
    • http://muicuiu.dumb1.com/2a07a03a01a02/The-Moon-and-the-Sun-by-Vonda-N-McIntyre.pdf
    • http://muicuiu.dumb1.com/1a08a03a07a06a01/Shed-by-Jason-McIntyre.pdf
    • http://muicuiu.dumb1.com/1a01a00a05a03a09/mcintyre-liar-by-David-Bly.pdf
    • http://muicuiu.dumb1.com/2a02a05a01a03a0

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