Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca44aebeecb00a38…

MALICIOUS

PDF

31.5 KB Created: 2019-05-02 01:37:37 +01:00 Authoring application: mPDF 5.7
MD5: ea2aa62b39b23808ce13eae734221f67 SHA-1: a3722fa2b5b6182a4ea1d5747b676fb532321285 SHA-256: ca44aebeecb00a38ff42233a9a93bd3b07db8db9b1e61db7dd1b27ac26f9806e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While the URLs themselves are currently marked as benign, the sheer volume and nature of the links suggest a malicious intent, likely to drive traffic to potentially harmful sites or for SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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/3091093090099093/11-Stories-For-Children-Story-Collection-With-an-Overload-of-Cuteness-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/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/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/3091093095095093/Mind-Blowing-Fun-Stories-for-Children-Exceptional-Series-for-any-Early-Reader-by-Betty-J-Byers.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/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
    • 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/3091093093090097/Early-Reading-Challenge-15-Books-in-1-Beginner-readers-Adventure-Animal-stories-Teach-Values-Book-Funny-free-story-prime-Rhymes-Fantasy-Education-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/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/3091092098099095/Quick-10-Minute-Stories-for-Boys-Including-14-more-short-stories-for-easy-reading-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/3091092096094093/Learn-to-Love-Reading-Short-Stories-12-Intellegent-Stories-for-Learning-Boys-and-Girls-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/3091093090094098/Kid-s-Adventures-12-Exciting-and-Adventurous-Stories-for-Boys-and-Girls-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/3091092097093092/Awesome-Adventure-Stories-for-Boys-19-Adventurous-Stories-for-Boys-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/3091093097092093/New-Readers-Story-Collection-4-15-Books-in-1-Easy-to-Read-and-Follow-Bedtime-Stories-for-Kids-by-Bet

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