GridinSoft Threat Intelligence
PdfOperation.dll file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2025-02-28 23:01:11 (a year ago); latest analysis 2025-02-28 23:01:11 (a year ago).
Product metadata: PdfOperation.
Signed by Shanghai Hudun Information Technology Co., Ltd.. The signature is reported as valid, but signed files can still be bundled or abused.
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
- Use the hash and metadata below to verify the exact file identity.
- Review publisher, signature, paths, and PE details for inconsistencies.
- Run a local scan if the file appears unexpectedly or starts with Windows.
File context
PdfOperation.dll is a Windows file recorded in the ThreatInfo database. It is associated with PdfOperation. The current detection status is Undefined, based on the latest analysis from 2025-02-28 23:01:11 (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.
File Details
| Product Name: | PdfOperation |
| MD5: | 2301c5cd66746904eda0f793dcdc8bc4 |
| Size: | 159 KB |
| First Published: | 2025-02-28 23:01:11 (a year ago) |
| Latest Published: | 2025-02-28 23:01:11 (a year ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2025-02-28 23:01:11 (a year ago) |
Overview
| Signed By: | Shanghai Hudun Information Technology Co., Ltd. |
| Status: | Valid |
The signature on PdfOperation.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:
| %appdata%\hudun\hudunimageconverter\resources |
ThreatInfo has observed PdfOperation.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 PdfOperation.dll across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is China with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for PdfOperation.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.
Analysis
PdfOperation.dll is identified as pe for 32-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
21f15e83fed7fa6bf1df1ae9d32798ca
afc87f024a071276525afcf2f5226868
134a2f06e561bc89d603f2f69e1862fc
3903904de42902048ea463690320e368
1f354d76203061bfdd5a53dae48d5435
c57e4f85d1c2606839db048b54c3abdc
fd9ba7484c62095d16ebae21eef017dd
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.