GridinSoft Threat Intelligence

avfilter-lav-4.dll file report

Under review File reputation report
MD5 31028fc4f612ed0efd3771df989c56bf
Latest seen 2025-07-24 23:01:11 (10 months ago)
First seen 2017-05-21 12:05:42 (9 years ago)
Size 174 KB
Publisher FFmpeg Project
Product FFmpeg
Signed by Hendrik Leppkes

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2017-05-21 12:05:42 (9 years ago); latest analysis 2025-07-24 23:01:11 (10 months ago).

Publisher context

Company metadata: FFmpeg Project. Product metadata: FFmpeg.

Digital signature

Signed by Hendrik Leppkes. 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.

File context

avfilter-lav-4.dll is a Windows file recorded in the ThreatInfo database. It is associated with FFmpeg. The reported company name is FFmpeg Project. The current detection status is Undefined, based on the latest analysis from 2025-07-24 23:01:11 (10 months 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.

File Details

Product Name: FFmpeg
Company Name: FFmpeg Project
MD5: 31028fc4f612ed0efd3771df989c56bf
Size: 174 KB
First Published: 2017-05-21 12:05:42 (9 years ago)
Latest Published: 2025-07-24 23:01:11 (10 months ago)
Status: Undefined (on last analysis)
Analysis Date: 2025-07-24 23:01:11 (10 months ago)

Overview

Signed By: Hendrik Leppkes
Status: Valid

The signature on avfilter-lav-4.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.

Common Places:

%programfiles%\freecodecpack\lavfilters
%programfiles%\freecodecpack
%sysdrive%\programmi\freecodecpack

ThreatInfo has observed avfilter-lav-4.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.

Geographic signal

Observed country distribution

ThreatInfo has seen avfilter-lav-4.dll across 53 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Germany
Share 21.8%
Low High activity

The strongest geographic signal for this file is Germany with 21.8% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

OS Version:

Windows 7 47.4%
Windows 10 40.6%
Windows 8.1 7.4%
Windows XP 2.4%
Windows Vista 1.2%
Windows 8 0.9%
Windows Embedded 8.1 0.3%

The most common operating system signal for avfilter-lav-4.dll is Windows 7 with 47.4% 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.

Analysis

avfilter-lav-4.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 0x00001420
Image base 0x6f400000

PE Sections:

Sections 11
Raw data 171008

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

.text 133632 bytes · 78.1% of section data
MD5 1132e1d9f738e20e65232188c1ad9962
.data 1024 bytes · 0.6% of section data
MD5 c870413c6d25cc04ff91eae4b465b906
.rdata 20992 bytes · 12.3% of section data
MD5 b95446d03a2c8c9d841fd02523f4539d
.rodata 512 bytes · 0.3% of section data
MD5 d72f748345aa338d0d40cd060ed27e2a
.bss 0 bytes · 0.0% of section data
MD5 00000000000000000000000000000000
.edata 3072 bytes · 1.8% of section data
MD5 48820dff0b1ef24ffeef4a9db1ad482d
.idata 6144 bytes · 3.6% of section data
MD5 3275f5f588fc5e31462f248bd7893625
.CRT 512 bytes · 0.3% of section data
MD5 360df6fe8e6533732ec18f5cfac3d345
.tls 512 bytes · 0.3% of section data
MD5 5aa4415475bd1827da6cee75286819a9
.rsrc 1024 bytes · 0.6% of section data
MD5 41d07dabe8e0eb9e5463ad9ea78e7061
.reloc 3584 bytes · 2.1% of section data
MD5 5aef70c64f83376709007f86a3eab8fa

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 31028fc4f612ed0efd3771df989c56bf.
  • 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.