I would like to shift a raster by a specified distance in x and y.

I tried to create a world file, as is suggested here, but neither Raster: Conversion: Translate in QGIS nor GDAL Conversion Translate in the Processing Toolbox created a world file when saved in the suggested formats. How can I shift raster layer for making cloud-shadow mask?

I tried from the Python console, as is suggested below, but I get an error: AttributeError: 'NoneType' object has no attribute 'SetGeoTransform'. I am not familiar with the Python console, so I may be doing something wrong. Translating (reposition) TIFF raster layer in QGIS

The plugin rasmover, which is suggested in several threads, does not appear to exist anymore?