The fake pdf attached to the "PURCHASE ORDER 05-30-2023" email contains a link, from which you download a tgz file with a TAR, inside which there is an exe: the malware.
Cybercrime, Conti has an up to $ 10,000,000 price on its head

Conti has an up to $ 10,000,000 price on its head. US DoS offers a reward for information leading to the identification and/or location of key leadership individuals in the transnational ransomware group
Conti ransomware gang has an up to $ 10,000,000 price on its head. It has announced by the US Department of State (DoS), offering a reward for information leading to the identification and/or location of any individual(s) who hold a key leadership position in the transnational cybercrime group. In addition, the Department is also offering a reward of up to $5,000,000 for information leading to the arrest and/or conviction of any individual in any country conspiring to participate in or attempting to participate in a Conti variant ransomware incident. Conti, a Russia-linked group, has been responsible for hundreds of ransomware incidents over the past two years. The FBI estimates that as of January 2022, there had been over 1,000 victims of attacks associated with ransomware with victim payouts exceeding $150,000,000, making the Conti Ransomware variant the costliest strain of ransomware ever documented.