Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6654badce8b85f…

MALICIOUS

PDF

13.9 KB Created: 2019-04-30 05:55:09 +01:00 Authoring application: mPDF 5.7
MD5: eb6e49175ff0ee248fc41d542cc8e57a SHA-1: 53e865f2be26306767405a3c4d24f036ad407560 SHA-256: aa6654badce8b85faf0d63bb2735313498be2c70fbbd5f5f2a8bc6990afa79de
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged it as malicious, the specific intent appears to be the distribution of content via these links, rather than direct execution of a payload from within the PDF itself. The majority of the extracted URLs were confirmed benign, suggesting the primary malicious activity is the link farm itself, potentially for SEO poisoning or to lead users to other malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/6098096091090096/Foreverwell-by-Chandelle-Lance.pdf
    • http://loaminoo.linkpc.net/6098096091090094/The-Lady-and-the-Dragon-by-Chandelle-Lance.pdf
    • http://loaminoo.linkpc.net/1094098098097098/Trial-by-Heart-Trial-Series-Book-4-by-Lizzy-Ford.pdf
    • http://loaminoo.linkpc.net/9098094093094091/The-Trial-of-Kerem-Cakan-The-Turkish-Judiciary-and-Honour-Killings-Trial-Observation-Report-by-Michael-G-Kearney.pdf
    • http://loaminoo.linkpc.net/4095094091099092/Trial-by-Thrall-Trial-Series-2-by-Lizzy-Ford.pdf
    • http://loaminoo.linkpc.net/6098096091090095/The-Bye-Bye-Book-by-Chandelle-Claassen.pdf
    • http://loaminoo.linkpc.net/6098096090090099/The-Chandelle-by-Paul-W-Werneke.pdf
    • http://loaminoo.linkpc.net/6098096090090095/The-Aether-Witch-The-Coven-Elemental-Magic-6-by-Chandelle-LaVaun.pdf
    • http://loaminoo.linkpc.net/6098096090090096/The-Brave-Witch-The-Coven-Elemental-Magic-2-by-Chandelle-LaVaun.pdf
    • http://loaminoo.linkpc.net/6098096091092099/Silk-amp-Secrets-Book-One-of-the-Runway-Trilogy-by-Emerald-Chandelle.pdf
    • http://loaminoo.linkpc.net/4094098097090093/Fer-de-Lance-by-Rex-Stout.pdf
    • http://loaminoo.linkpc.net/4092090096096099/No-Redemption-by-Lance-Abrusco.pdf
    • http://loaminoo.linkpc.net/1095095096097094/Watching-You-by-Lance-Erlick.pdf
    • http://loaminoo.linkpc.net/3095091099093091/The-Valentine-by-Elizabeth-A-Lance.pdf
    • http://loaminoo.linkpc.net/3093095096099096/The-Shadow-Spy-by-Robert-Lance.pdf
    • http://loaminoo.linkpc.net/1099092096091095/The-Agency-Vanya-amp-Lance-by-J-J-Massa.pdf
    • http://loaminoo.linkpc.net/7097099099091098/You-re-Not-Stupid-You-re-Ignorant-by-Lance-Hodge.pdf
    • http://loaminoo.linkpc.net/1099098094094097/The-Lance-Temptation-by-Brenda-Maxfield.pdf
    • http://loaminoo.linkpc.net/2097096095091092/Tonguing-the-Zeitgeist-by-Lance-Olsen.pdf
    • http://loaminoo.linkpc.net/1096092095091094/The-Marriage-You-Do-Not-Deserve-by-Lance-W-Bell.pdf
    • http://loaminoo.linkpc.net/6098096091092099/Sil

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