/usr/aarch64-linux-gnu/bin/readelf is in binutils-aarch64-linux-gnu 2.30-15ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/aarch64-linux-gnu/bin/../../bin/aarch64-linux-gnu-readelf
/usr/aarch64-linux-gnu/bin/../../bin/aarch64-linux-gnu-readelf