DavidR
2
One there is no need to delete it, certainly not without investigation, as a decompression bomb is just a file that although small in size it could be very large when uncompressed. There may be legitimate reasons for using multiple compression tools to make it smaller.
What is the suspect file name, what size is it, where was it found e.g. (C:\windows\system32\suspect-file-name.xxx) ?