If you are looking to analyze or report on the contents and safety of this specific JAR file, you can use several standard Java development and security tools: Ways to Analyze the JAR File
Use an IDE like IntelliJ IDEA to decompile the classes and see what the code is actually doing. FinerDupes v2.jar
To check for vulnerabilities or malicious code within the JAR, you can use scanners like Grype or upload it to VirusTotal . If you are looking to analyze or report
Knowing the source (e.g., a specific GitHub repo or a Minecraft modding forum) would allow for a more detailed functional report. FinerDupes v2.jar