/usr/ is in libclamav-dev 0.99.4+addedllvm-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/bin/
/usr/bin/clamav-config
/usr/include/
/usr/include/clamav.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libclamav.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libclamav-dev/
/usr/share/doc/libclamav-dev/copyright
/usr/share/man/
/usr/share/man/man1/
/usr/share/man/man1/clamav-config.1.gz
/usr/lib/x86_64-linux-gnu/libclamav.so
/usr/share/doc/libclamav-dev/AUTHORS
/usr/share/doc/libclamav-dev/BUGS
/usr/share/doc/libclamav-dev/FAQ
/usr/share/doc/libclamav-dev/NEWS.Debian.gz
/usr/share/doc/libclamav-dev/README.Debian.gz
/usr/share/doc/libclamav-dev/README.gz
/usr/share/doc/libclamav-dev/changelog.Debian.gz