Is this a backdoor ?

NOD32 can't detect it, but some anti-virus software reported it is a backdoor. I had sumbit it to sample@eset.com more than 13 hours ago. But still can't detect it. Is this file okay?

 

While transfering a suspect file to sample@eset.com after 30 hours waiting, it will catch the virus, eventually. But does it wait too long for 30 hours?

 

well, you were lucky with 30 hours.