/usr/lib/linux-tools/4.15.0-1021-aws/perf is in linux-tools-4.15.0-1021-aws 4.15.0-1021.21.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/4.15.0-1021-aws/../../linux-aws-tools-4.15.0-1021/perf