Malicious PDF — malware analysis report

Static analysis result for SHA-256 9738ce8564d416d4…

MALICIOUS

PDF

18.1 KB Created: 2019-04-30 04:37:43 +01:00 Authoring application: mPDF 5.7
MD5: cff87ebc4ba11c7cdd93cfed5e3d09c0 SHA-1: 74172dd0b9003685455ff57cea2b6b0342732d99 SHA-256: 9738ce8564d416d474c772bfe058938f03705fc1fd6a9893e06fee3aeb6e4d87
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While the extracted URLs themselves are marked as benign, the sheer volume and the heuristic firing indicate a suspicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3096093090092096/Uncle-Bob-s-Red-Flannel-Bible-Camp---From-Eden-to-the-Ark-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/2093099094092/Uncle-Sam-by-Steve-Darnall.pdf
    • http://loaminoo.linkpc.net/4090096093094098/Long-Horn-Big-Shaggy-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/4097092090095092/Flash-Virus-Episode-Two-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/4090093092093095/Flash-Virus-Omnibus-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/3097094095094096/I-Know-Why-The-Waters-of-the-Sea-Taste-of-Salt-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/7090090093099094/Revenant-Book-one-of-the-Tatterdemon-Trilogy-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/4097092093091091/The-Lunenburg-Werewolf-and-Other-Stories-of-the-Supernatural-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/7091094094096094/Fun-with-Uncle-Steve-Book-20-Saxon-Phonics-and-Spelling-1-by-Barbara-A-Donovan.pdf
    • http://loaminoo.linkpc.net/1091095091093098093/Bible-Camp-Bloodbath-by-Joey-Comeau.pdf
    • http://loaminoo.linkpc.net/1090099096094096/Sinking-Deeper-Or-My-Questionable-Possibly-Heroic-Decision-to-Invent-a-Sea-Monster-by-Steve-Vernon.pdf
    • http://loaminoo.linkpc.net/1091096098098098093/Mysteries-of-the-Bible-From-the-Location-of-Eden-to-the-Shroud-of-Turin-A-Collection-of-Essays-Published-by-the-Biblical-Archaeology-Society-by-Molly-Dewsnap-Meinhardt.pdf
    • http://loaminoo.linkpc.net/1091091092097099/Vernon-Can-Read-by-Vernon-E-Jordan-Jr-.pdf
    • http://loaminoo.linkpc.net/8090097097092099/King-James-The-Holy-Bible-the-bible-bible-bible-study-jesus-religion-religious-heaven-king-james-old-testament-new-testament-prayer-books-christian-by-Anonymous.pdf
    • http://loaminoo.linkpc.net/4095092095091097/Treblinka-Transit-Camp-or-Extermination-Camp-by-Carlo-Mattogno.pdf
    • http://loaminoo.linkpc.net/1090098091093090099/The-Man-In-The-Red-Flannel-Suit-by-Robert-Heitmann.pdf
    • http://loaminoo.linkpc.net/4096091097094/The-Man-in-the-Gray-Flannel-Suit-by-Sloan-Wilson.pdf
    • http://loaminoo.linkpc.net/1093099096093098/The-Man-in-the-Gray-Flannel-Suit-by-Sloan-Wilson.pdf
    • http://loaminoo.linkpc.net/1094091099095095/Lollygagged-and-Flannel-Flogged-by-Adam-D-Watson.pdf
    • http://loaminoo.linkpc.net/1098090092098096/Camp-Payback-Camp-Boyfriend-2-by-J-K-Rock.pdf
    • http://loaminoo.linkpc.net/109109509109309809

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