Did you just stumble upon a download or a file on your computer that has a digital signature from Maxthon Asia Ltd? Some of the security products refers to the detected files as Generic StartPage!bbv and TROJ_CLICKER.SMO. The detection rate for the Maxthon Asia Ltd files collected here is 8%. Please read on for more details.
You'll probably notice Maxthon Asia Ltd when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Maxthon Asia Ltd certificate with the following steps:
Here is a screencap of a file digitally signed by Maxthon Asia Ltd:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This means that the file has been published by Maxthon Asia Ltd and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also view the address for Maxthon Asia Ltd, such as the street name, city and country.
VeriSign Class 3 Code Signing 2009-2 CA has issued the Maxthon Asia Ltd certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screencap above.
The following are the Maxthon Asia Ltd files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 19/46 | max2_133daohang4.exe |
| 1/67 | mx_1.6.7.34.exe |
| 0/48 | MxUeip.dll |
Here's the detection names for the Maxthon Asia Ltd files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AntiVir | TR/Dldr.Agent.myux |
| Antiy-AVL | Trojan/win32.agent.gen |
| CAT-QuickHeal | Adware.StartPage (Not a Virus) |
| Commtouch | W32/Risk.VMQY-3712 |
| Comodo | TrojWare.Win32.TrojanDownloader.Agent.~ibr |
| DrWeb | Trojan.DownLoad1.64189 |
| F-Prot | W32/MalwareF.FOWW |
| GData | Script.Trojan.StartPage.F |
| Malwarebytes | Trojan.Downloader |
| McAfee | Generic StartPage!bbv |
| McAfee-GW-Edition | Generic StartPage!bbv |
| Norman | Startpage.A |
| PCTools | Adware.StartPage!rem |
| Rising | Trojan.Win32.Generic.11F03C9E |
| Sophos | Mal/Generic-S |
| Symantec | Adware.StartPage |
| TotalDefense | Win32/Swisyn.AG |
| TrendMicro | TROJ_CLICKER.SMO |
| TrendMicro-HouseCall | TROJ_CLICKER.SMO |
| eGambit | malicious_confidence_50% |
The detection percentage is based on that I have gathered 255 scan reports for the Maxthon Asia Ltd files. 20 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: