Week of the RSA

You have managed to acquire an encrypted message together with a set of RSA public keys that belong to employees of the company. The keys are already extracted from certificates and saved to files with random names, thus anonymous. It is known that the message is encrypted with one of those keys.

There is a hint that some of the keys may be vulnerable to attacks, and this could allow the decryption of the secret message.

Recover the plaintext.

Proof: Flag from the decrypted file.