Yes, it is possible, but it depends on the role this deception played. In Moroccan law, we speak of fraud (dol): these are the maneuvers or voluntary silence of one party intended to make you enter into a contract.
Fraud gives rise to annulment ("rescission") only when, without these maneuvers or concealment, you would not have concluded the contract at all (art. 52). In other words, the deception must have been decisive in your decision.
Also note: fraud committed by a third party produces the same effect, but only if the party benefiting from it was aware of it (art. 52).
On the other hand, if the deception concerned only minor details of the obligation and did not actually determine your commitment, you cannot annul the contract: you have only the right to damages (art. 53).
In practice, ask yourself: would you have signed knowing the truth? If the answer is clearly no, you fall under article 52. If you would have signed anyway, but under different conditions, you fall under article 53.
Esto es información jurídica general, no asesoramiento legal. Para asesoramiento sobre su situación específica, consulte a un abogado colegiado en Marruecos.