The death of Nora Quoirin, a French-Irish teenager whose body was found near a Malaysian jungle resort after she vanished while on holiday, was most likely due to misadventure, a coroner has found.

Coroner Maimoonah Aid ruled out homicide, natural death and suicide and said the 15-year-old likely got lost after leaving her family's cottage on her own.

She disappeared at the Dusun eco-resort in southern Negeri Sembilan state on August 4, 2019, a day after her family arrived for a holiday.

After an extensive search, her body was found on August 13 beside a stream on a palm oil estate about 1.6 miles from the resort.

Police believed she climbed out of the cottage window on her own, with no evidence of any foul play.

But Nora's parents said she was likely kidnapped because she had mental and physical disabilities and would not have wandered off on her own.

The coroner described that possibility as a theory and said it would be a breach of her duty to speculate on third-party involvement without any evidence.

Nora was only wearing underwear when she went missing, but her body was found naked.

The coroner noted the family's contention this lent credence to the possibility of sexual assault but said an extensive autopsy could find no such proof, nor evidence of struggle marks or smothering.

Ms Aid also said there were no suspicious circumstances prior to the teenager's disappearance, no ransom request and no signs of intrusion into the family cottage.

"I ruled that there was no-one involved in the death of Nora Anne. It is more probable than not that she died by misadventure, i.e. that she had gone out of the (cottage) on her own and subsequently got lost in the abundant palm oil plantation," the coroner said.

Nora Anne's parents were listening to the online verdict from their home in London, but gave no immediate statement.

A total of 49 witnesses testified over 24 days at the inquest, which began last August, using video-conferencing due to the coronavirus pandemic.