Malicious PDF — malware analysis report

Static analysis result for SHA-256 25fdf4589a890cd3…

MALICIOUS

PDF

14.2 KB Created: 2019-05-02 22:43:54 +01:00 Authoring application: mPDF 5.7
MD5: ef6b88e002289bdde8d5135ff02cce8f SHA-1: 0712abd11f60b630b7515a1f7fad5dba34a6e97c SHA-256: 25fdf4589a890cd384c74c9d315796a7cb0376803ece2ba1349e358a23023f29
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. The primary heuristic indicates this is a PDF SEO link farm, suggesting the document's purpose is to drive traffic to these external links. The ML classifier also flagged the document as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/5097091095092/Banished-from-Grace-Fall-from-Grace-1-by-Aria-Williams.pdf
    • http://loaminoo.linkpc.net/3091099094098096/Choosing-Happy-More-Than-Friends-3-by-Aria-Grace.pdf
    • http://loaminoo.linkpc.net/8097094097091098/Als-du-mein-warst-Stadt-in-den-Bergen-4-by-Aria-Grace.pdf
    • http://loaminoo.linkpc.net/4098098098099/The-Necessary-Grace-to-Fall-by-Gina-Ochsner.pdf
    • http://loaminoo.linkpc.net/1091099099091/Fall-from-Grace-by-Kristi-Gold.pdf
    • http://loaminoo.linkpc.net/4099097090098090/Fall-from-Grace-by-Jill-Barnett.pdf
    • http://loaminoo.linkpc.net/7092097098/Fall-from-Grace-by-Danielle-Steel.pdf
    • http://loaminoo.linkpc.net/1090096096092095095/Grace-and-Glory-Our-Australian-Girl---Grace-3-by-Sofie-Laguna.pdf
    • http://loaminoo.linkpc.net/1090098090098093095/Her-Name-is-Grace-2nd-Edition-Grace-Chronicles-by-Shidorr-Myrick-Gayer.pdf
    • http://loaminoo.linkpc.net/1095099090097091/Grace-Williams-Says-It-Loud-by-Emma-Henderson.pdf
    • http://loaminoo.linkpc.net/9092090099091/In-the-Grip-of-Grace-You-Can-t-Fall-Beyond-His-Love-by-Max-Lucado.pdf
    • http://loaminoo.linkpc.net/7095095093092094/Chronicle-of-a-Fall-from-Grace-by-Sandor-L-S-G-Marai.pdf
    • http://loaminoo.linkpc.net/1098098092098099/Grace-Alive-Heart-of-Grace-1-by-Natasha-House.pdf
    • http://loaminoo.linkpc.net/3091090093091096/Grace-Under-Fire-The-Gift-of-Grace-1-by-Frog-Jones.pdf
    • http://loaminoo.linkpc.net/2095099094097090/Class-Collision-Fall-from-Grace-by-Annette-Mackey.pdf
    • http://loaminoo.linkpc.net/2090090096095095/The-Tricky-Part-One-Boy-s-Fall-from-Trespass-into-Grace-by-Martin-Moran.pdf
    • http://loaminoo.linkpc.net/4090097094093097/State-of-Grace-Grace-6-by-M-Lauryl-Lewis.pdf
    • http://loaminoo.linkpc.net/4090097092097096/The-Dawn-of-Grace-Grace-0-5-by-M-Lauryl-Lewis.pdf
    • http://loaminoo.linkpc.net/3096091092098099/Praying-for-Grace-Grace-5-by-M-Lauryl-Lewis.pdf
    • http://loaminoo.linkpc.net/4090097095099097/Fallen-Grace-Grace-4-by-M-Lauryl-Lewis.pdf
    • http://loaminoo.linkpc.net/309109009309

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