The Call Me By Your Name actor, 34, also reportedly hit the woman’s head against a wall.
It is claimed that the rape took place in Los Angeles, but the actor denied it.
A 24-year-old woman, named only Effie, made the allegations against the Hollywood star during a virtual press conference hosted by high-profile American lawyer Gloria Allred.
The accuser collapsed while reading a prepared statement claiming that she met Hammer, 34, on Facebook in 2016.
She alleged that he raped her for four hours and banged her head against a wall.
Armie, also known for starring in the Facebook movie The Social Network, has previously described the social media allegations against him as “vicious and bogus online attacks on me.”
When asked if Effie would file a complaint, Ms Allred, known to have taken on cases involving women’s rights, said: ‘Effie provides what she thinks is relevant to law enforcement and c It is then up to the police and the prosecutor to decide if necessary. is sufficient evidence to prosecute her.
“But I will only say that Effie has the courage to cooperate with any investigation that may take place.” ”
In response to the allegation, Armie’s lawyer claimed his client was innocent and accused the woman of sending hundreds of sexually-oriented texts.
Lawyer Andrew B Brettler sent a text allegedly sent by the accuser to the actor to media organizations, including the Mirror.
He said in a statement: “From day one, Mr. Hammer maintained that all of his interactions with Ms. Angelova – and all of her other sexual partners for that matter – were completely consensual, discussed and agreed upon in advance, and mutual participatory. ”