Use tools like Ghidra or IDA Pro to reverse-engineer the code and find the "user-friendly" (often sarcastic) functionality.
Run binwalk -e user-friendly_tool.7z to check for hidden files or appended data within the archive headers. user-friendly_tool.7z
If the "tool" doesn't run or looks suspicious, deeper analysis is required: Use tools like Ghidra or IDA Pro to