Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a530df9422c2c10…

MALICIOUS

PDF

21.5 KB Created: 2019-05-02 19:28:18 +01:00 Authoring application: mPDF 5.7
MD5: 2c869f98b3064f36c4c2dd8fe69a0025 SHA-1: 7d867b54a0c4fdc7f7372401cad293f0393557f4 SHA-256: 8a530df9422c2c107b626886d5a4ca35a364a3e35e7f206427ee91dd9006f9af
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 ML classifier flagged this as malicious with high confidence, the specific URLs extracted are currently marked as benign. The primary attack pattern appears to be SEO manipulation or a redirection scheme. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/4094095098099092/The-Big-Book-Of-Time-Travel-Romance-Includes-After-Cilmeri-0-5-Lost-Highlander-1-The-McKinnon-Legends-1-Out-of-Time-1-Time-Walkers-1-by-Sarah-Woodbury.pdf
    • http://loaminoo.linkpc.net/4094095098099091/Exiles-in-Time-After-Cilmeri-5-by-Sarah-Woodbury.pdf
    • http://loaminoo.linkpc.net/3092093090097090/Crossroads-in-Time-After-Cilmeri-3-by-Sarah-Woodbury.pdf
    • http://loaminoo.linkpc.net/4094095093092092/Castaways-in-Time-After-Cilmeri-6-by-Sarah-Woodbury.pdf
    • http://loaminoo.linkpc.net/4094095093092093/Winds-of-Time-After-Cilmeri-1-5-by-Sarah-Woodbury.pdf
    • http://loaminoo.linkpc.net/3092091092090096/Prince-of-Time-After-Cilmeri-2-by-Sarah-Woodbury.pdf
    • http://loaminoo.linkpc.net/8091097091093092/The-Time-Machine-The-Original-Time-Travel-Story-A-Short-Science-Fiction-Novel-about-Time-Travel-by-H-G-Wells.pdf
    • http://loaminoo.linkpc.net/4093098099093093/Justice-for-all-Time-a-time-travel-romance-by-Kit-Cole.pdf
    • http://loaminoo.linkpc.net/4099099099098093/Time-Trip-A-Time-After-Time-Reincarnation-Novella-Time-After-Time-Reincarnation-Lives-Book-1-by-Wendy-Godding.pdf
    • http://loaminoo.linkpc.net/1096092098093090/The-Fine-Art-of-Deception-A-Time-Travel-Romance-Book-Series-Book-1-by-Alyssa-Richards.pdf
    • http://loaminoo.linkpc.net/4094098095095099/Time-Travel-and-Warp-Drives-A-Scientific-Guide-to-Shortcuts-through-Time-and-Space-by-Allen-Everett.pdf
    • http://loaminoo.linkpc.net/1093093097093096/The-Mists-of-Time-Da-Vinci-Time-Travel-4-by-Susan-Squires.pdf
    • http://loaminoo.linkpc.net/1096098094090098/The-Reluctant-Time-Traveler-Time-Travel-1-by-Lynda-Eymann.pdf
    • http://loaminoo.linkpc.net/5097094091098092/The-Time-Machine-The-Original-Time-Travel-Story-by-H-G-Wells.pdf
    • http://loaminoo.linkpc.net/3092091097093097/The-Best-Time-Travel-Stories-of-All-Time-by-Barry-N-Malzberg.pdf
    • http://loaminoo.linkpc.net/3096091092098/Time-Regained-In-Search-of-Lost-Time-7-by-Marcel-Proust.pdf
    • http://loaminoo.linkpc.net/8098099098091092/Time-Regained-In-Search-of-Lost-Time-vol-7-by-Marcel-Proust.pdf
    • http://loaminoo.linkpc.net/2097094092098099/Time-Walkers-2-Book-Bundle-The-Legend-of-the-Bloodstone-Return-of-the-Pale-Feather-by-E-B-Brown.pdf
    • http://loaminoo.linkpc.net/4093095090098095/The-Future-Memoir-of-Ann-Jones-A-Time-Travel-Romance-with-a-Splash-of-Magic-by-Alex-Bailey.pdf
    • http://loaminoo.linkpc.net/3092091099098098/Three-in-Time-The-Winds-of-Time-The-Year-of-the-Quiet-Sun-There-Will-Be-Time-by-Chad-Oliver.pdf
    • http://loaminoo.linkpc.net/8091097091093092/The-Time