/usr/bin/arm-linux-gnueabihf-as is in binutils-arm-linux-gnueabihf 2.25-5.
This file is owned by root:root, with mode 0o755.
It is a symlink to /usr/bin/./usr/arm-linux-gnueabihf/bin/as
/usr/bin/./usr/arm-linux-gnueabihf/bin/as