Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d4a553f52804a1…

MALICIOUS

PDF

12.7 KB Created: 2019-05-07 04:26:22 +01:00 Authoring application: mPDF 5.7
MD5: 0377c7931d328109dd5fdeb195b4df36 SHA-1: ebb55ee5955b255c8325f9ab9a2b13d968c07668 SHA-256: d3d4a553f52804a1444267947f4968a5a510200d31163f8f5e91ef6c2bc5f311
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which are numeric slugs pointing to book titles. This pattern is indicative of a link farm used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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/4095097097096093/The-Wanderer-by-Timothy-J-Jarvis.pdf
    • http://loaminoo.linkpc.net/1091090096093095099/Wanderer---Origins-Wanderer-s-Odyssey-4-by-Simon-Goodson.pdf
    • http://loaminoo.linkpc.net/6093093096098098/George-Jarvis-his-journal-and-related-documents-by-George-Jarvis.pdf
    • http://loaminoo.linkpc.net/8092090099096090/Digital-Voodoo-The-Collected-Works-of-Timothy-O-Goyette-by-Timothy-O-Goyette.pdf
    • http://loaminoo.linkpc.net/5090091095097097/The-Wanderer-by-Monica-Edwards.pdf
    • http://loaminoo.linkpc.net/1091090096094093095/Wanderer-by-Stella-Coulson.pdf
    • http://loaminoo.linkpc.net/1094091093093099/The-Wanderer-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/3092091096093098/The-Wanderer-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/1091090096093096094/The-Wanderer-by-Beverly-Barton.pdf
    • http://loaminoo.linkpc.net/7099090092092/The-Wanderer-by-Mika-Waltari.pdf
    • http://loaminoo.linkpc.net/3093095097094093/The-Wanderer-The-Sin-Bin-1-by-Dahlia-Donovan.pdf
    • http://loaminoo.linkpc.net/1091090096093096096/Wanderer-by-Dennis-Schmidt.pdf
    • http://loaminoo.linkpc.net/9093095095099094/Driving-Jarvis-Ham-by-Jim-Bob.pdf
    • http://loaminoo.linkpc.net/1090090092097092099/Selections-from-the-Cherubinic-Wanderer-by-Angelus.pdf
    • http://loaminoo.linkpc.net/2098099099096091/The-Wanderer-s-Tale-by-David-Bilsborough.pdf
    • http://loaminoo.linkpc.net/2099095092091/Wanderer-Springs-A-Novel-by-Robert-Flynn.pdf
    • http://loaminoo.linkpc.net/1090090092094094091/The-Cherubinic-Wanderer-by-Angelus-Silesius.pdf
    • http://loaminoo.linkpc.net/2099095098093094/Folk-Medicine-by-D-C-Jarvis.pdf
    • http://loaminoo.linkpc.net/1090091099097090091/The-Typewriter-Girl-by-J-L-Jarvis.pdf
    • http://loaminoo.linkpc.net/3092093090090099/RomperSuit-by-Allen-Jarvis.pdf
    • http://loaminoo.linkpc.net/9093095095099094/Driving-Jarvis-Ham-by-Jim-Bob.pd

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