Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b937a91912ff242…

MALICIOUS

PDF

40.3 KB Created: 2019-05-01 17:14:29 +01:00 Authoring application: mPDF 5.7
MD5: b3b3b1d77e81eb4f1cd33e1974c9537d SHA-1: fb11f3a6556e31f3a3b368d0b25a83183647f085 SHA-256: 5b937a91912ff24200a3eed1d6b6e14e6ba45c02c3e6277dd1a0aa01212fb40e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, forming a link farm. These links are disguised as children's books, likely to deceive users into clicking them. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9703

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://loaminoo.linkpc.net/4093095093099091/Books-for-Children---I-Promise-Good-Dream-Story-4-Free-Kids-Books-Beginning-Reader-Bedtime-Stories-For-Kids-Ages-3-8-children-s-books-by-Aurora-Higgins.pdf
    • http://loaminoo.linkpc.net/4093095090097093/Books-for-Children---My-Best-Unicorn-Good-Dream-Story-2-Free-Kids-Books-Beginning-Reader-Bedtime-Stories-For-Kids-Ages-3-8-children-s-books-by-Aurora-Higgins.pdf
    • http://loaminoo.linkpc.net/3091092097097091/Books-for-Kids-Super-Ants-Illustration-Book-kids-books-Ages-3-8-Bedtime-Stories-For-Kids-Children-s-Books-beginner-reader-books-Bugs-amp-Spiders-1-by-Robot-J-.pdf
    • http://loaminoo.linkpc.net/3091092094099090/Books-for-Kids-The-Tortoise-amp-The-Hare-Illustration-Book-kids-books-Ages-3-8-Bedtime-Stories-For-Kids-Children-s-Books-beginner-reader-books-turtle-1-by-Robot-J-.pdf
    • http://loaminoo.linkpc.net/3091092097092094/Books-for-Kids-THE-TRUE-RAY-OF-HOPE-Illustration-Book-kids-books-Ages-3-8-Bedtime-Stories-For-Kids-Children-s-Books-beginner-reader-books-by-Robot-J-.pdf
    • http://loaminoo.linkpc.net/3091092093091097/Books-for-Kids-Tommy-Tiger-Visits-Veggie-World-Illustration-Book-Ages-3-8-Short-Stories-for-Kids-Kids-Books-Bedtime-Stories-For-Kids-Children-Books-Early-Readers-by-Tommy-Tiger.pdf
    • http://loaminoo.linkpc.net/3091092092092093/Books-for-Kids-Tommy-Tiger-and-the-Football-Fear-Illustration-Book-Ages-3-8-Short-Stories-for-Kids-Kids-Books-Bedtime-Stories-For-Kids-Children-Books-Early-Readers-by-Tommy-Tiger.pdf
    • http://loaminoo.linkpc.net/1099099090090092/Books-for-Kids-Superhero-Puppy-Dog-Bedtime-Stories-For-Kids-Ages-3-10-children-s-books---Bedtime-Stories-For-Kids-by-S-J-Walter.pdf
    • http://loaminoo.linkpc.net/2095094091092095/Children-books-SOPHIE-S-SURPRISE-EGG-Beginner-readers-early-readers-amp-learning-kids-collection-Fiction-story-picture-books-for-children-amp-Toddlers-Bedtime-fiction-beginner-reader-books-Book-2-by-Alex-Man.pdf
    • http://loaminoo.linkpc.net/3091093093090090/Children-s-Adventure-Story-Bundle-5-4-Books-in-1-Kids-Bedtime-Stories-Collection-Books-about-music-life-animals-planets-Family-Coming-of-age-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/6096095091095091/Children-s-Books-Sweet-as-Fruit-Books-for-kids-ages-4-11-Nutrildren---Nutrition-for-Children-Book-2-by-Shir-Guez.pdf
    • http://loaminoo.linkpc.net/3091092095095093/Books-for-Kids-Jurassic-World-Kids-books-Ages-3-10-Dinosaur-Cartoon-Photos-For-Kids-by-Robot-J-.pdf
    • http://loaminoo.linkpc.net/1090099095095096096/Children-books-The-Book-of-Feelings-Friendship-Values-book-Adventure-amp-Education-Kids-books-Emotions-Feelings-Growing-up-amp-facts-of-life-Social-skills-for-kids-collection-by-Lilach-Yitzhaki.pdf
    • http://loaminoo.linkpc.net/3091093097092093/New-Readers-Story-Collection-4-15-Books-in-1-Easy-to-Read-and-Follow-Bedtime-Stories-for-Kids-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/4097099092090097/No-One-Quite-Like-Me-Free-audio-book-included-Children-s-bedtime-rhyming-picture-story-book-Preschool-book-for-kids-ages-2-4-by-Christina-McDonald.pdf
    • http://loaminoo.linkpc.net/1098095091098096/Betsy-Bird-Learns-To-Fly-Free-audio-book-included-Children-s-bedtime-rhyming-picture-story-book-Preschool-book-for-kids-ages-2-4-by-Christina-McDonald.pdf
    • http://loaminoo.linkpc.net/3091093093097092/Halloween-Stories-for-Kids-amp-More-17-Assorted-Stories-to-Read-with-Kids-at-Halloween-Bonus-Halloween-Party-Story-Kids-Story-Bundle-Children-s-Series-Spooky-Scary-Funny-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/9097094097091097/The-Missing-Present-Mystery-Book-for-Kids-Ages-6-8-9-12-Free-Stories-Bedtime-Stories-Zooey-amp-Caleb-6th-Grade-Detectives-3-by-R-K-Davenport.pdf
    • http://loaminoo.linkpc.net/1091097092095097090/Malala-Yousafzai-The-Girl-Who-Stood-Up-Against-the-Taliban---Biography-for-Kids-9-12-Children-s-Biography-Books-by-Baby-Professor.pdf
    • http://loaminoo.linkpc.net/3091093095093092/Early-Reading-Challenge-9-15-Books-in-1-Bedtime-story-Beginner-readers-Adventure-Animal-stories-Teach-Values-Book-Funny-free-story-prime-Rhymes-Fantasy-by-Betty-J-Byers.pdf

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