It is false-positive.
I saw same in already downloaded FM14.0v1_xDBC_14.0.10.exe using clamAV.
If you need to download now, off the blocker.
Thank you user19752. Any idea how to get this verified by FileMaker?
False-positive is caused by update of the virus pattern. Usually it is resolved in a few days.
FMI has nothing to do. You can claim it to vendor of blocker.