The attachment can be a PDF or a DOC file, an XLS spreadsheet, a binary image, or a voice or video multi-media file.

附件可以是一个PDF或DOC文件、一个XLS电子表格、一幅二进制图像，或一个视频或音频多媒体文件。

youdao

Just upload your jpg or pdf, and it will ship you back a txt or doc file automagically.

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Once the .doc file is opened with either Word 97 or Word 2000, the virus is immediately executed if macros are enabled, Hernan said.

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Certain doc formats, such as PDF and Word types, can be easily added to your phone's file system without a huge amount of hassle.

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