Vibration sound

[Cloudsky]

Hi guys. I've got a slight problem with my guitar(Jap fender 86) when i pluck my G and high E strings. There would be a slight vibration sound(it sounds like something is vibrating inside the body). Any idea why?

 

[Chang]

wah auto vibrato?...hahaz. doubt so.
shld be fret buzz. ur action very low?
maybe tts the cause.