Run jar -tf obf-jar-id-353911.jar-out.jar in your terminal to list all files contained within the archive.
To determine what is inside this file, you can analyze it using the following methods: obf-jar-id-353911.jar-out.jar
(e.g., a malware sample, a specific program, a dependency?) Run jar -tf obf-jar-id-353911
Use tools like JD-GUI or Bytecode Viewer to open the .jar file and view the decompiled Java source code, even if it is obfuscated. a malware sample
Knowing the context helps me guide you on the best analysis tools.