Automated systems frequently generate randomized strings to ensure that zip file downloads remain unique and secure for a single user.
If you are trying to determine what is inside this specific zip file safely: RQNjD24DdMqk800QHUsH.zip
The length and complexity of the name suggest it might be the result of a hashing algorithm (like SHA-1 or MD5 truncated) used to verify file integrity. How to Investigate This File RQNjD24DdMqk800QHUsH.zip