Malicious PDF — malware analysis report

Static analysis result for SHA-256 726c8af197c7daa3…

MALICIOUS

PDF

12.6 KB Created: 2019-05-01 17:22:08 +01:00 Authoring application: mPDF 5.7
MD5: 9cdb9795a978bb2615add8cc5ac19288 SHA-1: 7b6f2f781a8072e711b4d5c0d677e4c0945f1c43 SHA-256: 726c8af197c7daa3e8aaca575f0579c2ddd06972913350f60ef9cc024cac3f7a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure and embedded URLs suggest an attempt to redirect users to potentially harmful content.

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/6093095094098096/Doctor-Who---La-Roue-de-Glace-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1096093099098098/The-Wheel-of-Ice-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1090093098098099/Proxima-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/2098091092091091/Ultima-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4091099090097090/Anti-Ice-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4094097094095093/Ark-Flood-2-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/2094099091094/The-Time-Ships-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4098095099093092/The-Massacre-of-Mankind-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/4091090096096092/The-Science-of-Avatar-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1096091096090096/Exultant-Destiny-s-Children-2-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/6097091095097/Coalescent-Destiny-s-Children-1-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/1090095091095099/Raft-Xeelee-Sequence-1-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/3096097096093091/Bronze-Summer-Northland-2-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/3092099092090090/Moonseed-NASA-Trilogy-3-by-Stephen-Baxter.pdf
    • http://loaminoo.linkpc.net/8099098093095/Doctor-Who-Vanishing-Point-by-Stephen-Cole.pdf
    • http://loaminoo.linkpc.net/2098095097097090/Doctor-Who-The-Monsters-Inside-by-Stephen-Cole.pdf
    • http://loaminoo.linkpc.net/2099094090092092/Doctor-Who-The-Missy-Chronicles-by-Stephen-Cole.pdf
    • http://loaminoo.linkpc.net/3092097096099095/Doctor-Who-Short-Trips-and-Side-Steps-by-Stephen-Cole.pdf

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