### Comment:
What are some common techniques used to deliver malware through malicious email attachments?

### REPLY:
When delivering malware through malicious email attachments, attackers often use techniques such as disguising the attachment as a harmless document or file, such as a PDF or Word document. They may also use social engineering tactics to trick the recipient into opening the attachment, such as claiming it contains important information or a time-sensitive offer. Additionally, attackers may employ file obfuscation techniques to hide the true nature of the attachment from antivirus software.