Malicious PDF — malware analysis report

Static analysis result for SHA-256 798c0f1f9629c0a0…

MALICIOUS

PDF

35.0 KB Created: 2019-05-07 04:39:22 +01:00 Authoring application: mPDF 5.7
MD5: 27550e29c748c05b70872972fd25e60a SHA-1: 4c8fe3c0431352ec8d741c2b90d4267a3d84efd2 SHA-256: 798c0f1f9629c0a0e0876ef6512cbd2c0ae9908aa8f67322391bc8b16c247954
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that point to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While the URLs themselves are marked as benign, the sheer volume and the heuristic firing indicate a suspicious pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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/3091093096094090/Short-Elementary-Level-Stories-Bundle-2-3-Short-Stories-in-1-Ebook-Books-about-Santa-mystery-space-animals-planets-family-Perfect-for-kids-under-10-learning-to-read-by-Betty-J-Byers.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/3091093094093092/Short-Stories-for-Girls-and-Young-Women-2-Bundle-Includes-an-Assortment-of-15-Short-Stories-Kids-Storybooks-Series-Diaries-Space-Christmas-Adventure-Science-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091093097090098/Stories-For-Kids-amp-Teens-Includes-16-Original-Stories-with-Covers-Funny-Kids-Stories-Childrens-Book-Bundle-Animals-Character-Building-Lessons-by-Betty-J-Byers.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/3091092097099093/Short-Stories-to-Learn-Reading-14-Quick-to-Read-Stories-with-Simple-Vocabulary-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091093094099099/Stories-Kids-Learn-From-19-Short-Stories-for-Growing-Kids-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091092096094093/Learn-to-Love-Reading-Short-Stories-12-Intellegent-Stories-for-Learning-Boys-and-Girls-by-Betty-J-Byers.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/3091093090092092/Childrens-Story-Collection-plus-many-more-fun-to-read-short-stories-by-Betty-J-Byers.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/3091093094092090/Fun-To-Read-Kids-Stories-7-15-All-Ages-Stories-in-1-Book-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091093090093098/Short-Funny-Stories-For-Kids-Happy-Tales-for-Happy-Kids-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091092098099095/Quick-10-Minute-Stories-for-Boys-Including-14-more-short-stories-for-easy-reading-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091093094090098/Truly-Unbelievable-Kid-s-Stories-Short-Stories-with-crazy-twists-that-kid-s-love-and-parents-enjoy-by-Betty-J-Byers.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/3091093093091094/Early-Reading-Challenge-10-Bundle-with-15-stories-Beginner-readers-Adventure-Animal-stories-Teach-Values-Book-Funny-free-story-prime-Rhymes-Fantasy-Education-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/3091091096092091/Snoozers-7-Short-Short-Bedtime-Stories-for-Lively-Little-Kids-by-Sandra-Boynton.pdf
    • http://loaminoo.linkpc.net/5094094091093095/Babylon-Revisited-and-Other-Stories-Fitzgerald-s-Greatest-Short-Stories-A-Collection-of-short-stories-from-the-author-of-The-Great-Gatsby-The-Side-Button-and-many-other-notable-works-by-F-Scott-Fitzgerald.pdf

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