/usr/share/icons/hicolor/64x64/apps/testdrive-attention.png is in testdrive-gtk 3.27-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/icons/hicolor/64x64/apps/../../../../testdrivegtk/media/testdrive-attention-green_64.png