GridinSoft Threat Intelligence

v8_libbase.dll file report

Under review File reputation report
MD5 486f2f186cc00dd8cc441a615e19254f
Latest seen 2025-06-16 23:01:12 (a year ago)
First seen 2025-06-16 23:01:11 (a year ago)
Size 222 KB
Product PDF 阅读器

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2025-06-16 23:01:11 (a year ago); latest analysis 2025-06-16 23:01:12 (a year ago).

Publisher context

Company metadata: ©2023 Sogou.com Inc.All rights reserved.. Product metadata: PDF 阅读器.

Digital signature

Signed by Beijing Sogou Technology Development Co., Ltd.. The signature is reported as valid, but signed files can still be bundled or abused.

Observed locations

ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.

Recommended action

What to do next

  1. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. Run a local scan if the file appears unexpectedly or starts with Windows.

v8_libbase.dll is a Windows file recorded in the ThreatInfo database. It is associated with PDF 阅读器. The reported company name is ©2023 Sogou.com Inc.All rights reserved.. The current detection status is Undefined, based on the latest analysis from 2025-06-16 23:01:12 (a year ago).

ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.

Product Name: PDF 阅读器
Company Name: ©2023 Sogou.com Inc.All rights reserved.
MD5: 486f2f186cc00dd8cc441a615e19254f
Size: 222 KB
First Published: 2025-06-16 23:01:11 (a year ago)
Latest Published: 2025-06-16 23:01:12 (a year ago)
Status: Undefined (on last analysis)
Analysis Date: 2025-06-16 23:01:12 (a year ago)

The signature on v8_libbase.dll is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.

%localappdata%
%localappdata%\sogoupdf\ktool_update\kdownload

ThreatInfo has observed v8_libbase.dll in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.

Windows 10 100.0%

The most common operating system signal for v8_libbase.dll is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.

v8_libbase.dll is identified as pe for 32-bit systems. The subsystem is Windows CUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 32-bit
Subsystem Windows CUI
Entry point 0x000258b0
Image base 0x10000000

PE Sections:

Sections 7
Raw data 217600

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 151552 bytes · 69.6% of section data
MD5 5c86fc4895ab75d5ff1065697d43e7a0
.rdata 53760 bytes · 24.7% of section data
MD5 373579bb872f0272ee342e698a590f84
.data 512 bytes · 0.2% of section data
MD5 9455d6c9077f3fdd733eb3b74fc14849
.00cfg 512 bytes · 0.2% of section data
Uncommon name
MD5 8c5a4950165820a298a094541f5b4ac5
.tls 512 bytes · 0.2% of section data
MD5 134b5956ca7a32f7432044b77c8438ef
.reloc 9728 bytes · 4.5% of section data
MD5 c504f332b7206fd6011eafc9cb220164
.rsrc 1024 bytes · 0.5% of section data
MD5 33ed7f7866f85e56aa6063afe7995ce3

PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.

Report conclusion

This file is still under review

ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 486f2f186cc00dd8cc441a615e19254f.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.