The Bangladesh Cricket Board (BCB) and the International Cricket Council (ICC) lodged the appeal this week after a ban imposed on the one-time prodigy was reduced from eight to five years, said BCB chief executive Nizamuddin Chowdhury.
The appeal was lodged with the Court of Arbitration for Sport (CAS) in Lausanne, Switzerland.
"Our lawyers had been authorised to make a decision on the judgement, which reduced Ashraful's original eight-year ban for match fixing. And they decided to lodge an appeal," said Chowdhury.
The 30-year-old batsman was banned last year after he tearfully confessed on national television to helping fix matches in the scandal-tarnished Bangladesh Premier League.
A local appeals panel late last month cut Ashraful's ban to five years including a two-year suspended sentence, meaning he can return to competitive cricket from August 2016.
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