Malware is often embedded in email as compressed attachments (such as .zip, .rar, etc.). Recently, however, Symantec has noticed an increase in malicious email attacks with .htm (HTML) attachments.
Here is what the message looks like in your inbox:
The attack contains a .htm attachment and obfuscated JavaScript is embedded in the coding of the file. The purpose of the JavaScript is to redirect your internet browser to a malware-hosting site in Russia which contains Trojan.Pidief and Trojan.Swifi.
Malicious JavaScript, when injected into an HTML file, can:
Here are some best practices to protect yourself from malicious email attacks: