Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6f64cb1c755926…

MALICIOUS

PDF

21.8 KB Created: 2019-04-30 02:00:08 +01:00 Authoring application: mPDF 5.7
MD5: f2b7423c508e8fce9d0154daec5d0ea6 SHA-1: 182c9ed74b7fce45e88a510b8efca156763bf20c SHA-256: 2d6f64cb1c755926ac0f5f153e6b02a3db639845e90d493d23594604126d4b30
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While most of these URLs themselves 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 strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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/1a00a06a02a06a02/Green-Card-Youth-Voices-Immigration-Stories-from-a-Minneapolis-High-School-by-Green-Card-Voices.pdf
    • http://muicuiu.dumb1.com/2a01a06a06a00a00/Green-Card-by-Elizabeth-Adams.pdf
    • http://muicuiu.dumb1.com/4a06a05a00a03a04/The-Greek-Tycoon-s-Green-Card-Groom-by-Kate-McMurray.pdf
    • http://muicuiu.dumb1.com/8a05a01a08a07a05/The-Ultimate-Green-Tea-Guide-History-Green-Tea-Benefits-Green-Tea-Types-Best-Brewing-Practices-and-Tasty-Green-Tea-Recipes-for-Everyone-by-Ayumi-Furuya.pdf
    • http://muicuiu.dumb1.com/3a08a09a03a09a00/Flame-Vine-His-Voices-The-Hearing-Voices-Series-2-by-Charles-Porter.pdf
    • http://muicuiu.dumb1.com/7a05a03a06a01a05/Immigrant-Voices-21st-Century-Voices-by-Achy-Obejas.pdf
    • http://muicuiu.dumb1.com/8a08a09a01a05a07/What-Credit-Card-Should-I-Get-How-to-Increase-Your-Wealth-and-See-the-World-with-Credit-Card-Bonuses-and-Bank-Freebies-by-Nicholas-Felten.pdf
    • http://muicuiu.dumb1.com/4a02a07a07a02a05/Voices-Echo-Voices-3-by-Linda-Lee-Graham.pdf
    • http://muicuiu.dumb1.com/1a09a01a05a02a08/Voices-from-D-Day-Voices-from-D-Day-by-Jonathan-Bastable.pdf
    • http://muicuiu.dumb1.com/4a08a02a03a09a00/The-Voices-of-Time-and-other-stories-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/3a01a03a01a09a02/The-39-Clues---Clues-Alcatraz-Island-Aloe-Amber-Barley-Blood-Bone-Branch-Serums-Cahill-Timeline-Cairo-Egypt-Calcium-Carbonate-Card-Combos-Card-Packs-Charlie-Wallace-Clover-Clue-Key-Clue-Symbols-Cocoa-Copper-by-Source-Wikia.pdf
    • http://muicuiu.dumb1.com/3a06a07a06a02a02/Children-of-the-Fleet-Fleet-School-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/5a03a00a07a06a09/Bonjour-Wildcats-High-School-Musical-Stories-from-East-High-12-by-N-B-Grace.pdf
    • http://muicuiu.dumb1.com/5a08a05a07a01/Lost-Voices-Lost-Voices-1-by-Sarah-Porter.pdf
    • http://muicuiu.dumb1.com/4a01a00a06a07/Voices-of-Dragons-Voices-of-Dragons-1-by-Carrie-Vaughn.pdf
    • http://muicuiu.dumb1.com/4a01a09a07a07a00/Voices-Rising-Stories-from-the-Katrina-Narrative-Project-by-Rebeca-Antoine.pdf
    • http://muicuiu.dumb1.com/4a07a05a08a08a02/Reclaiming-Banished-Voices-Stories-on-the-Road-to-Compassion-by-Lawrence-J-Lincoln.pdf
    • http://muicuiu.dumb1.com/3a01a07a09a00a03/Going-to-School-by-Suzanne-Green.pdf
    • http://muicuiu.dumb1.com/1a00a03a03a00a05a04/These-High-Green-Hills-by-Jan-Karon.pdf
    • http://muicuiu.dumb1.com/1a01a07a07a06a02a05/Cooking-Green-Reducing-Your-Carbon-Footprint-in-the-Kitchen--the-New-Green-Basics-Way-by-Kate-Heyhoe.pdf
    • http://muicuiu.dumb1.com/8a08a09a01a05a07/What-Credit-Card-Should-I-Get-How-to-Increase-Your-W