i did a search on the hdd for one string i pulled from the list, and it seems to appear in many qt5 files
Binary file ./mxe/usr/i686-w64-mingw32.static/bin/test-qt5.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/bin/test-qtbase-pkgconfig.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/bin/test-qttools.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/lib/libQt5Core.a matches
./mxe/usr/i686-w64-mingw32.static/qt5/include/QtCore/5.7.0/QtCore/private/qurltlds_p.h:"kisarazu.chiba.jp\0"
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qdbusviewer.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/dumpcpp.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qml.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/idc.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qtpaths.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/xmlpatternsvalidator.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qtplugininfo.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qmltestrunner.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qdbus.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/xmlpatterns.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/dumpdoc.exe matches
Binary file ./mxe/usr/i686-w64-mingw32.static/qt5/bin/qtdiag.exe matches
along with probably all the wallets i've compiled on the system.