could be a funnel web, they come in black brown , fat or thin depending on sex or location.
But does it have like prominent little prongs on its abdomen at the rear 'cerci'.
Funnel webs 'cerci' are very prominent easily seen.
I cannot see any in the pic but if you look at some funnel web pics you see the cerci. easily.
It could quite easily be aSydney funnel web as they tend to be leaner and brown in colour, a bit different from the fat shiney black ones we always see on tv.
sorry not much help, but i copied this off the Australian museum site:
might help.
Identifying Funnel-web Spiders
Shiny carapace
Deeply curved groove (fovea)
No obvious body pattern
Eyes closely grouped
Four spinnerets, largest with last segment longer than wide
Lower lip (labium) studded with short, blunt spines
Modified male second leg (usually with a mating spur or grouped spines)
An obvious, conical projection or 'spur' on the lower side of the middle segment (tibia) of the second leg (about halfway along) is characteristic of the genus Atrax, exemplified by the Sydney Funnel-web Spider, Atrax robustus. Males of all other funnel-web species (currently placed in the genus Hadronyche) either have a blunt, spine-covered tibial swelling, or a few spines only, on the second leg. Note also the mating organ on the male palp.
Suspects gallery
These spiders are funnel-webs:
These spiders are sometimes mistaken for funnel-webs:
Sydney Brown Trapdoor Spider (Misgolas rapax) male
Sydney Brown Trapdoor Spider (Misgolas rapax) female
Mouse Spider (Missulena sp) female
Bymaniella near Guyra, New South Wales
Black house spider (Badumna insignis)
Cheers
Dan