I would consider it highly suspect.
The only thing I'm aware of in recent months (and that March creation date would tally) that placed files in /Users/ is the Flashback malware. I don't recognise the filename from that episode, but others have tested it more thoroughly than I, so may be able to offer an opinion.
Ideally, go to Applications > Utilities > Java Prefences and uncheck the two boxes for Java SE6.
If you were seriously compromised, I think you would probably have had problems with Safari freezing or crashing, but better to be safe and do the checks.
We don't use \ in file paths on Mac, it's /. \ is used as an escape character in Terminal commands etc.