Exploit-MSWord.k is a malicious Word document Trojan. The Word document is of xml file format.

Upon opening the .doc file in Word, Word might crash completely, however it doesn't crash always. On some occasions nothing directly malicious is visible and Word opens the .doc file fine and a small red cross might be seen temporarily (about a second or two) on the page left above.

There are no macros visible embedded inside the .doc file.

However the file seems to connect to an http address.

More information can be found at this McAfee page.