/usr/lib/x86_64-linux-gnu/qt5/ is in qttools5-dev-tools 5.9.5-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/qt5/bin/
/usr/lib/x86_64-linux-gnu/qt5/bin/designer
/usr/lib/x86_64-linux-gnu/qt5/bin/lconvert
/usr/lib/x86_64-linux-gnu/qt5/bin/linguist
/usr/lib/x86_64-linux-gnu/qt5/bin/lrelease
/usr/lib/x86_64-linux-gnu/qt5/bin/lupdate
/usr/lib/x86_64-linux-gnu/qt5/bin/pixeltool
/usr/lib/x86_64-linux-gnu/qt5/bin/qcollectiongenerator
/usr/lib/x86_64-linux-gnu/qt5/bin/qdbusviewer
/usr/lib/x86_64-linux-gnu/qt5/bin/qdoc
/usr/lib/x86_64-linux-gnu/qt5/bin/qhelpconverter
/usr/lib/x86_64-linux-gnu/qt5/bin/qhelpgenerator
/usr/lib/x86_64-linux-gnu/qt5/bin/qtattributionsscanner
/usr/lib/x86_64-linux-gnu/qt5/bin/qtdiag
/usr/lib/x86_64-linux-gnu/qt5/bin/qtpaths
/usr/lib/x86_64-linux-gnu/qt5/bin/qtplugininfo
/usr/lib/x86_64-linux-gnu/qt5/plugins/
/usr/lib/x86_64-linux-gnu/qt5/plugins/designer/
/usr/lib/x86_64-linux-gnu/qt5/plugins/designer/libqquickwidget.so
/usr/lib/x86_64-linux-gnu/qt5/plugins/designer/libqwebview.so