Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca96bba6f199856…

MALICIOUS

PDF

22.1 KB Created: 2019-04-30 09:05:05 +01:00 Authoring application: mPDF 5.7
MD5: ae4e4731e737685316ceb55c97ff5dfd SHA-1: 2b85a86128cda50137ff9c395069da86b1ca94ea SHA-256: 4ca96bba6f1998560193ced8e48c7a3bbc66471882b512acb866c313d4b64c2f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' 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 0.9919

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/4092095093095092/Ghosts-Don-t-Eat-Potato-Chips-The-Adventures-of-the-Bailey-School-Kids-5-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/4097094093092093/Angels-Don-t-Know-Karate-The-Adventures-Of-The-Bailey-School-Kids-23-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/1098090099092093/Gremlins-Don-t-Chew-Bubble-Gum-Adventures-Of-The-Bailey-School-Kids-13-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/4090096095092099/Zombies-Don-t-Play-Soccer-The-Adventures-of-the-Bailey-School-Kids-15-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/2094091091099097/Cupid-Doesn-t-Flip-Hamburgers-The-Adventures-of-the-Bailey-School-Kids-12-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/1091099090091095093/Santa-Claus-Doesn-t-Mop-Floors-The-Adventures-of-the-Bailey-School-Kids-3-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/6097095099097098/Frankenstein-Doesn-t-Plant-Petunias-The-Adventures-Of-The-Bailey-School-Kids-6-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/2098099097090098/Elves-Don-t-Wear-Hard-Hats-The-Adventures-of-the-Bailey-School-Kids-17-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/2098097091093097/Frankenstein-Doesn-t-Slam-Hockey-Pucks-The-Adventures-of-the-Bailey-School-Kids-34-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/5097095091093091/Rhinoceroses-amp-Potato-Chips-by-M-E-Wonder.pdf
    • http://loaminoo.linkpc.net/6093093096097095/The-Polar-Bear-Express-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/3090093093097092/Trouble-at-Trident-Academy-by-Debbie-Dadey.pdf
    • http://loaminoo.linkpc.net/4099090097094099/Charms-and-Chocolate-Chips-A-Magical-Bakery-Mystery-3-by-Bailey-Cates.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/3091092097093091/Ghosts-Who-Went-to-School-by-Judith-Spearing.pdf
    • http://loaminoo.linkpc.net/3098095097091096/The-Cooper-Kids-The-Cooper-Kids-Adventures-1-4-by-Frank-E-Peretti.pdf
    • http://loaminoo.linkpc.net/1099096090099090/One-Potato-Two-Potato-by-Cynthia-C-DeFelice.pdf
    • http://loaminoo.linkpc.net/6096094091097093/Alice-s-Adventures-In-Wonderland-amp-Through-The-Looking-Glass-by-Debbie-Guthery.pdf
    • http://loaminoo.linkpc.net/2097099092095097/Why-Kids-Kill-Inside-the-Minds-of-School-Shooters-by-Peter-Langman.pdf
    • http://loaminoo.linkpc.net/1090099093093090096/Sweet-Potato-Recipes-Top-37-Easy-Quick-Healthy-amp-Delicious-Sweet-Potato-Recipes-by-Jamie-Fynn.pdf
    • http://loaminoo.linkpc.net/6097095099097098/Frankenstein-Doesn-t-Plant-Petunias-The-Adventures-Of-The-Bailey-School-Kids-6-by-Debbi