Hi,
The CPU on that machine is really old, Core 2 duo E8435, the intel ark website doesn't even tell me anymore what it can or cannot do, but certainly do not assign more as 1 core to a guest..
You also might want to disable the 3D on such an old machine.
I also see this a lot in your log before it crashes:
vmx| I125: USB-CCID: SCardListReaders with 0 len failed: SCARD_E_NO_SERVICE(0x8010001d).
So I suggest to remove any non critical USB devices from the iMac before installing your guest OS.
Finally if your guest OS is retrieved via uTorrent (not sure, but your iso in the logs is located in the uTorrent download folders) then basically anything can happen and all bets are off.
--
Wil