The shooting happened at nighttime as bullets were fired at eight Iranian Kurds who were carrying a dinghy towards the water at a beach in Dunkirk.
Two men received hospital treatment after being hit by the bullets on September 22.
One man told the paper: “There were eight of us holding the boat near the beach. We were getting ready to launch it for 40 people who wanted to cross to your country.
“Then three or four police arrived in one vehicle. One policeman shot Juanro Rasuli at point blank range. I can’t remember how many times they fired the rubber bullets.
“When the police saw us, they shouted stop, We stopped and they still shot us. Then we ran away as best we could.”
Mr Rasuli, 24, is still recovering in hospital after suffering fractures to his leg.
The incident took place five miles from a squalid migrant camp where hundreds of people are awaiting a boat to Britain.
Home Secretary Priti Patel has threatened to withhold £54million in payments by Britain to the French government for beach patrols in northern France if the number of migrant boats making the crossing to Britain do not decrease.
The number of people who have made the dangerous journey across the English Channel in small boats this year has reached 17,085.
The figure is double the total for all of 2020 when 8,417 people made the crossing.