Also known as Wajdi, he is said to have had his asylum application rejected in France recently and decided to risk the trip across the water to the UK.
His body was discovered on Sangatte beach, near Calais, Wednesday morning after a walker found his friend suffering from hypothermia in the middle of the night. A major search took place before his body was found at 8 a.m.
Documents he had with him gave a birth date of 1992, making him 28 years old, Philippe Sabatier, the Boulogne-sur-Mer prosecutor, confirmed to Sky News.
Hamdallah, originally from West Kordofan, a state of Sudan bordering war-affected areas of Darfur and the Nuba Mountains, reportedly fled the country in 2014.
Relatives told The Guardian he spent two years at Libya worked as a car washer with his older brother before going to France via Italy.
A cousin told the newspaper he told him about Calais, with Hamdallah saying he may never see him again.
He last posted on Facebook in June, with a message written in Arabic that read: “In the palm of fate we walk and do not know what is written”.
British Home Secretary Priti Patel called the incident “a heartbreaking and tragic loss of a young life”.
She said: “This horrific incident serves as a stark reminder of the heinous criminal gangs and smugglers who exploit vulnerable people.
“By working together, we are determined to stop them. “
French authorities said they intercepted at least 41 migrants on Wednesday as they tried to cross the Channel, including a woman and three children rescued after their boat got into difficulty off Dunkirk.
British border forces boats also took 50 migrants, including several children, on small boats in the English Channel and brought them to Dover on Wednesday.
It comes amid continuing tensions between the UK and France over a huge increase in border crossings.
UK Border Force veut boats intercepted in the middle of the English Channel and returned to France to deter people from making the trip.