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https://s3mvaudio2.s3.us-east-2.amazonaws.com/courses/test.pdf?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=1HPS101KFMM8SKNK9BG2%2F20261011%2Fus-east-2%2Fs3%2Faws4_request&X-Amz-Date=20261011T061454Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1000&X-Amz-Signature=52f029819d38674d5e1d3f5b6772a8ae3c1628fe89e3eea67182852f21bc46f6