It is the first time members of the North Korean special forces have carried out paragliding infiltration.
A defence source said he was worried South Korean radar would hardly detect a night time airborne attack.
The source added: “I believe that North Korean special forces are adopting amazing methods of infiltration with limited resources.”
According to officials, North Korea has been drilling paragliding soldiers at a training ground that has a model of the Combined Forces Command.
It is already known that the warmongering nation had built a model of the South Korean presidential office Cheong Wa Dae to conduct drills to sharpen their ability to sneak into the South.
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The drills involved several North Korean special force teams including the army, navy and air force, the officials said.
A paraglider is easy to operate, it only weighs three to four kilograms and it is thought special forces could carry their folded gliders on their backs.
The troops could then fly from a summit to seize a target in a surprise attack.
The exercise prompted the South Korean and US forces to conduct short-range air defence drills last month.
North Korea’s drills come after months of threats and missile tests from the hermit kingdom, who last month tested a missile capable of reaching the continental US.
Donald Trump has been briefed by his generals on options to respond to North Korean “aggression”.
In a statement, the White House said: “This morning President Donald J. Trump met with members of his national security team to receive a briefing from Secretary of Defence James Mattis and Chairman of the Joint Chiefs of Staff General Joseph Dunford.
“The briefing and discussion focused on a range of options to respond to any form of North Korean aggression or, if necessary, to prevent North Korea from threatening the United States and its allies with nuclear weapons.”
After the meeting, the US flew two supersonic bombers over the Korean peninsula.
The most senior US general recently told the American army to “stand ready” for war with North Korea.