A Russian student bashed with a metal pole by a group of men in Perth has called the attack, which left him brain damaged, "evil" and "gutless".

Alex, 16, said he was walking in Innaloo on the afternoon of Saturday July 26, when he was approached by three men.

According to Alex, who is studying at a Perth high school, one of the assailants was carrying a metal bar.

"He demanded my property, and I refused to give it to him," he said.

"I looked away and he hit me from behind, which was very gutless of him."

Alex was only aware of being hit once, but doctors believe he may have been hit a further two times while partly unconscious.

The attack left Alex in hospital for more than a month with a fractured skull and brain damage resulting in language difficulties.

"I wouldn't say I'm fully recovered," he said.

"I don't have any physical disabilities but I do have these problems with language."

Australia a 'nice country' student says, despite attack

Alex said the incident has not changed his opinion of Australia.

He said he was still trying to comprehend his attacker's motives.

"I still don't understand how evil a person would have to be to keep hitting, with a metal pole ... another human being on the head."

"He was a coward, I feel really angry about this situation because he hit me from behind and yeah, that was gutless," he said.

Alex will stay in Australia until he finishes year 12.

"I don't feel that Australia is a violent place, it's a nice country but there are some people who can be that evil," he said.

Police are still looking for the men involved in the assault and are appealing for anyone with information to contact them.

They believe the assailants are dark-skinned males aged between 16 and 25.