A bad cable would doubtfully cause a S.M.A.R.T. error. It's much more likely that it's just the drive; just because it's new doesn't mean it's not bad, or about to die. If you're not sure try another utility that shows more in depth reports of what's going on with the drive, it may just be Disk Utility messing up or a minuscule problem.

In any case, back everything up and prepare for the worst.