Cybersecurity researchers have called attention to a new antivirus evasion technique that involves embedding a malicious Microsoft Word file into a PDF file. The sneaky method, dubbedMalDoc in PDFby JPCERT/CC, is said to have been employed in an in-the-wild attack in July 2023. “A file created with MalDoc in PDF can be opened in Word even though it has magic numbers and file structure of PDF,”