1. Android Central Question's Avatar
    I received messages from 2 contacts both have 1 kb attachments that they never actually sent. Accidently clicked on the first one and it disappeared.

    I have since run mcafee many times with no viruses. But is my phone safe? How likely is mcafee to find something? After texting these contacts they verified they never sent an attachment so how are they appearing in my phone under those contacts?
    06-21-2021 10:24 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! What kind of filetype was it? Was this part of a group text?

    Please register on this forum, which will allow you to engage in discussion more easily, as well as post images. https://forums.androidcentral.com/as...community.html
    06-21-2021 11:05 AM
  3. Chuck Finley69's Avatar
    Welcome to Android Central! What kind of filetype was it? Was this part of a group text?

    Please register on this forum, which will allow you to engage in discussion more easily, as well as post images. https://forums.androidcentral.com/as...community.html
    I’ve recently had malware attempts received through both individual SMS and group MMS texts containing malware links. I suspect we’ll be seeing what the OP refers to more in the near future.
    B. Diddy likes this.
    06-21-2021 01:22 PM
  4. B. Diddy's Avatar
    I’ve recently had malware attempts received through both individual SMS and group MMS texts containing malware links. I suspect we’ll be seeing what the OP refers to more in the near future.
    Hmm, interesting. I would assume, though, that if the attached file were an attempt at malware, it would require the user's approval to download and install a package (and, if Unknown Sources was turned off, its installation would be blocked anyway).
    VidJunky likes this.
    06-21-2021 03:20 PM
  5. Bison3n6's Avatar
    It was a "multimedia" file type. Or at least it said so under details
    06-21-2021 03:59 PM
  6. B. Diddy's Avatar
    That wouldn't be the file type -- I'm thinking more of something like .pdf or .mp4.

    When you got those messages, did it just say "Tap to Download," without any actual text from the sender?
    06-21-2021 04:35 PM
  7. Bison3n6's Avatar
    No it shows as a file to download and says "No Subject" and underneath says the file size.
    06-21-2021 05:31 PM
  8. B. Diddy's Avatar
    Ok -- but did your contacts actually include any text with these messages? Can you confirm with them that they actually sent those messages?
    06-21-2021 05:33 PM
  9. Bison3n6's Avatar
    Yes. The fist one I clicked (before I realized what was going on) simply disappeared. I double checked with both contacts and screenshotted the conversation and both confirmed the attachments were not from them.
    06-21-2021 08:20 PM
  10. VidJunky's Avatar
    Yes. I double checked with both contacts and screenshotted the conversation and both confirmed the attachments were not from them.
    I think the question is related more to whether or not they actually sent the message vs the message with an attachment. If they actually sent you the message and in a previous comment you confirmed that it was part of a group conversation. This adds up to being innocent. Allow me to explain.

    There are two ways to send group messages. They can be sent as individual messages and would send as SMS. SMS is a format we're all familiar with 140 characters no emojis, no pics or attachments. The second way is as MMS. MMS messages can include emojis and other types of attachments, pics, short vids, links so on and so on. Also with MMS group messages, typically, everyone who replies responds to everyone in the group message, so if Bill sends a message to Jane and Rob and Rob responds Jane and Bill both will see the reply. MMS is sent as a data packet and depending on a few factors, the recipient's carrier signal strength in a location, the network connection at the time of receipt and some times the size of the packet the data packet may or may not fully download. When the packet doesn't download or fully download a link is often sent so that the recipient can recover the message when conditions improve. When the person is back on their home network, in a better coverage area or when they have a stronger signal. The link is merely a placeholder if you will and a way to recover the message if not fully received. A lot of times if this is a one on one conversation you'll see this if a pic was included, where the text may be sent but the attachment is held until released by the link. Since group messages can be sent as MMS this can happen to them as well. So the real question is where were you when you received the these messages? Did you have a good signal, where you roaming on another network or where you moving where you may have been handed off from one tower to another? Anything like that, because it doesn't sound like you were sent anything nefarious but rather a link so that you could recover the MMS message if not fully received.

    B. Diddy is correct, if it were something attempting to install something on your device you would have to agree to the installation, you would likely have to have Unknown Sources enabled because it wouldn't be from the Play Store and there would likely be other indications of an install, like a progress bar in your notifications. Email attachments from a PC is where we get this idea of things installing on their own because unlike an Android device a PC requires almost no permissions to install something and even bits of code in an attachment that is opened can have bugs that install. Links in messaging apps will usually try to open your browser and take you to a site that may be fake and try to get you to sign-up for something or sign in to your account for whatever fake it tries to be so that they can phish for your information. If the link didn't take you anywhere online, open anything in your browser and the message was one from a group conversation I'd say there's nothing to fear.
    B. Diddy likes this.
    06-21-2021 09:11 PM
  11. Bison3n6's Avatar
    Thanks, that makes me feel better. However these messages were not in a group message. These were both sent by two separate contacts independently within days of each other. And the messages were at my house on my wifi so I believe connection was not an issue.
    06-22-2021 08:42 AM
  12. B. Diddy's Avatar
    Which carrier are you on? There can sometimes be glitchiness when it comes to MMS messages delivered over wi-fi calling (AT&T is especially notorious for this).

    Show us the screenshot you took (but make sure to blot out any identifying information like phone numbers): http://forums.androidcentral.com/gen...d-central.html
    06-22-2021 10:01 AM
  13. mustang7757's Avatar
    Thanks, that makes me feel better. However these messages were not in a group message. These were both sent by two separate contacts independently within days of each other. And the messages were at my house on my wifi so I believe connection was not an issue.
    Hi, welcome to AC!
    It could of been some delay in the messages getting to you and it expired thats why you open the one and didn't do anything and probably why other contacts didn't recall because they thought you got one at that time and thought u meant recently. Just throwing a theory out there .
    06-22-2021 11:18 AM

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