/usr/lib/x86_64-linux-gnu/libpkcs11-helper.so is in libpkcs11-helper1-dev 1.11-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpkcs11-helper.so.1.0.0
/usr/lib/x86_64-linux-gnu/libpkcs11-helper.so.1.0.0