rule sorting files depends on date in filename

Good morning...
need some help please....
i have a PDF-file named: Noodlesoft-Hazel-20161105_testfile.pdf
what i need:
a rule based on the filename where Hazel should use the date in the filename here and then move the file into a folder with the correct year (2016).
But the date is not exactly at the same position in the filename. The position of the date in the Filename is variable....
I would appreciate any suggestions.
Thanks for your feedback in advance.
need some help please....
i have a PDF-file named: Noodlesoft-Hazel-20161105_testfile.pdf
what i need:
a rule based on the filename where Hazel should use the date in the filename here and then move the file into a folder with the correct year (2016).
But the date is not exactly at the same position in the filename. The position of the date in the Filename is variable....
I would appreciate any suggestions.
Thanks for your feedback in advance.