Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a6648efeadcf3f…

MALICIOUS

PDF

12.7 KB Created: 2019-05-07 09:31:33 +01:00 Authoring application: mPDF 5.7
MD5: ad5bce82e5654894dd2b7655bacf70c8 SHA-1: f8f76348a462dae0e749344d794f8b1bd12cf72a SHA-256: d1a6648efeadcf3f920b55ee69102379a8e4d857137e63b7b2a668c5a403c15e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links pointing to a domain that appears to be a link farm, likely intended to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact lure. However, the presence of a link farm strongly suggests a distribution or redirection mechanism.

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/1090095091095099/Raft-Xeelee-Sequence-1-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/2098091092091091/Ultima-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/9094093096094/Evolution-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1096091093091097/Flood-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1096093099098098/The-Wheel-of-Ice-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4094097094095093/Ark-Flood-2-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1090093098098099/Proxima-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4091099090097090/Anti-Ice-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/2094099091094/The-Time-Ships-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4091090096096092/The-Science-of-Avatar-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4098095099093092/The-Massacre-of-Mankind-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/3096097096093091/Bronze-Summer-Northland-2-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/6097091095097/Coalescent-Destiny-s-Children-1-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1096091096090096/Exultant-Destiny-s-Children-2-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/3092099092090090/Moonseed-NASA-Trilogy-3-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/6093095094098096/Doctor-Who---La-Roue-de-Glace-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/7090097090090/Manifold-Space-Manifold-2-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1090091097090097093/Buck-Baxter-Love-Detective-The-Buck-Baxter-Mysteries-1-by-Geoffrey-Knight.pdf
    • http://loaminoo.linkpc.net/9097093097099093/The-Hilbert-Moore-Sequence-the-Hilbert-Moore-Sequence-by-Wolf-Blecher.pdf
    • http://loaminoo.linkpc.net/3096097095097096/Raft-People-by-M-L-Katz.pdf

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