Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ea4bfef1748ef4…

MALICIOUS

PDF

34.8 KB Created: 2019-05-02 18:32:37 +01:00 Authoring application: mPDF 5.7
MD5: c2e48f9e77a0f207591eb7dd6c6f52f6 SHA-1: df928714120c3443ab235cd949c25ba2e73c5713 SHA-256: 84ea4bfef1748ef46b074b18e97f18a65f6f81d3d9ff2edb04e74e7ef702b156
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to what appear to be SEO-optimized book titles hosted on a dynamic DNS domain. This pattern is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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/1090092091098095098/Gravity-Falls-Coloring-Book-Great-Activity-Book-for-Kids-and-Adults-by-Mr-Akim.pdf
    • http://loaminoo.linkpc.net/7090090091092092/Asterix-and-Obelix-Coloring-Book-Coloring-Book-for-Kids-and-Adults-This-Amazing-Coloring-Book-Will-Make-Your-Kids-Happier-and-Give-Them-Joy-Best-Books-for-Adults-and-Kids-2-4-4-8-8-12-by-Emma-Kovtun.pdf
    • http://loaminoo.linkpc.net/1090092091099091099/Lego-Dc-amp-marvel-Super-Heroes-Coloring-Book-for-Kids-and-Adults-by-Mr-Akim.pdf
    • http://loaminoo.linkpc.net/6099099099090096/Asterix-and-Obelix-Coloring-Book-Coloring-Book-for-Kids-and-Adults---30-Illustrations-by-Eddie-Com.pdf
    • http://loaminoo.linkpc.net/1090092091098096092/Masha-and-the-Bear-Coloring-Book-Beautiful-Coloring-Pages-for-Kids-40-Illustrations-by-Mr-Akim.pdf
    • http://loaminoo.linkpc.net/1090092091099091096/Shopkins-Coloring-Book-For-Kids-Ages-3-10-by-Mr-Akim.pdf
    • http://loaminoo.linkpc.net/1091095090090092096/Bonobo-Coloring-Book-for-Adults-Relaxation-Meditation-Blessing-Sketches-Coloring-Book-40-Grayscale-Images-by-Jessica-Belcher.pdf
    • http://loaminoo.linkpc.net/4099093093091091/A-Coloring-Book-for-Adults-Remember-the-Joy-of-Coloring-and-Reduce-Stress-Volume-2-by-Amber-Richards.pdf
    • http://loaminoo.linkpc.net/5095094092091096/Diabolic-Adult-Coloring-Book-Devilish-Satanic-and-Wiccan-Possession-Inspired-Adult-Coloring-Book-by-Diabolic-Adult-Coloring-Book.pdf
    • http://loaminoo.linkpc.net/1091099095092092094/Children-s-Book-Kate-Gets-Dressed-with-Dressy-Fairy-Great-Bedtime-Story-for-Kids-Age-4---8-Educational-Book-by-Shulamit-Zilberberg.pdf
    • http://loaminoo.linkpc.net/7098099094094093/The-Steampunk-Coloring-and-Activity-Book-Containing-Illustrations-Recipes-Formulas-amp-Other-Activities-to-Entertain-amp-Entice-Creativity-for-the-Prevention-of-Ennui-amp-General-Malaise-Among-the-Youth-of-Today-amp-Their-Progenitors-by-Phoebe-Longhi.pdf
    • http://loaminoo.linkpc.net/7093098091093091/Great-Paintings-Coloring-Book-by-Sheila-Suskind.pdf
    • http://loaminoo.linkpc.net/3091093096096093/MAGICAL-ASSORTMENT-OF-SHORT-KIDS-STORIES-14-Stories-in-1-KIDS-BOOK-PICTURES-BOOK-CHILDREN-S-BOOK-PRE-SCHOOL-FAIRLY-TALE-EARLY-LEARNING-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/1090099095095096099/The-Wishing-Star-bed-time-story-Values-book-Adventure-amp-Education-Kids-books-Emotions-Feelings-Social-skills-for-kids-collection-Book-3-by-Lilach-Yitzhaki.pdf
    • http://loaminoo.linkpc.net/8098098093090095/Rotk-ppchen-M-rchen-Malbuch-Little-Red-Riding-Hood-Fairy-Tale-and-Coloring-Pages-Zweisprachig-in-Deutsch-und-Englisch-Bilingual-German---English-Book-for-Kids-by-Charles-Perrault.pdf
    • http://loaminoo.linkpc.net/1091096095092090099/Coloring-To-Relax-The-Mind---Adult-Coloring-Book-by-Mary-D-Brooks.pdf
    • http://loaminoo.linkpc.net/4096090099090090/Believe-in-Yourself-An-Adult-Coloring-Book-featuring-Positive-Affirmations-by-I-M-Coloring.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/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

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