/usr/ is in php-random-compat 2.0.11-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/php-random-compat/
/usr/share/doc/php-random-compat/changelog.Debian.gz
/usr/share/doc/php-random-compat/copyright
/usr/share/php/
/usr/share/php/random_compat/
/usr/share/php/random_compat/byte_safe_strings.php
/usr/share/php/random_compat/cast_to_int.php
/usr/share/php/random_compat/error_polyfill.php
/usr/share/php/random_compat/random.php
/usr/share/php/random_compat/random_bytes_com_dotnet.php
/usr/share/php/random_compat/random_bytes_dev_urandom.php
/usr/share/php/random_compat/random_bytes_libsodium.php
/usr/share/php/random_compat/random_bytes_libsodium_legacy.php
/usr/share/php/random_compat/random_bytes_mcrypt.php
/usr/share/php/random_compat/random_int.php