/usr/lib/libqimageblitz.so.4 is in libqimageblitz4 1:0.0.6-4+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libqimageblitz.so.4.0.0
/usr/lib/libqimageblitz.so.4.0.0