Is C1_RFQ_SEND_20261004.md safe?
No antivirus engine detected this small Markdown document, and external intelligence found no matching malware family or researcher rule.
All 75 antivirus engines returned no detection, including 17 tier-1 engines, and the sample is a small Markdown text file rather than an executable. Its very recent appearance and lack of runtime analysis limit certainty, but there is no concrete threat signal in the available evidence.
ca3c17c79ab4ac4154…33a7cd615f9449Recommended next actions
Before opening
Open it only when its sender or download source is one you independently trust.
If you already opened it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
All 75 antivirus engines returned no detection, including 17 tier-1 engines, and the sample is a small Markdown text file rather than an executable. Its very recent appearance and lack of runtime analysis limit certainty, but there is no concrete threat signal in the available evidence.
The sample is a 5,075-byte Markdown document, and none of 75 antivirus engines flagged it. Seventeen tier-1 engines reported no detection, with no family consensus or hacktool identification. Malware-family feeds and researcher rules produced no matches. No runtime observation was completed, and no comprehensive contacted-host reputation result is available, so network or execution behavior cannot be characterized. The file was first observed today with only one submission, but rarity alone does not establish harmful content.
What We Detected
The file is a 5,075-byte Markdown text document. None of 75 antivirus engines reported a malicious or suspicious result, including 17 tier-1 engines, and no malware family was identified. External intelligence also returned no MalwareBazaar match, CIRCL record, or YARAify rule.
Threat Behavior
No completed sandbox observation is available because behaviour is null. The contacted-host reputation check was also unavailable, so the file's runtime and network behavior cannot be assessed from this evidence. As a text document, it is not directly executable, although links or instructions inside any document should still be reviewed before use.
What To Do Now
The available static evidence contains no concrete threat indicator. Open the document in a current text editor or Markdown viewer, keep endpoint protection enabled, and avoid following unexpected links or commands unless their destination and purpose are independently verified.
Where this verdict could be wrong2 caveats
- prevalence.classification=rare_new: the file has only one submission and was first observed today, so its history is very limited.
- behaviour=null and contactedHosts=null leave runtime activity and contacted-host reputation unassessed.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/75 engines reported malicious or suspicious results
- engines.tier1ReportedClean=17 and engines.tier1Malicious=0
- externalIntel.malwareBazaar.hit=false
- externalIntel.yaraify.ruleCount=0
- No brand mismatch or filename-disguise heuristic was detected
- prevalence.classification=rare_new: first observed today with one submission
- behaviour=null: no completed runtime observation
- contactedHosts=null: no comprehensive contacted-host reputation result
The document can be handled with normal caution in an updated Markdown viewer. Keep endpoint protection enabled and independently verify any links, attachments, or commands it contains.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 75 engines flagged the file.
Sandbox
PartialRuntime data is present, but no completed sandbox environment is recorded.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
CompleteRule evaluation completed with no recorded matches.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime behavior was not available
The report does not treat a missing runtime observation as a clean result.
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 0rule hits recorded
- 0 / 75engines flagged
- 1sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 75 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
No completed runtime observation is available for this file.
ProvenanceDerivedSourceRuntime coverageObserved at - 03
The hash has been submitted 1 time from 1 source.
ProvenanceDerivedSourceSaved report factsObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
YARA rules
No matchesThe rule pass completed without a saved public match.
0 of 75 engines flagged this file
View all 75 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Barely seen in the wild and first surfaced recently. That limits reputation evidence, but rarity alone is not proof of malware.
Fingerprint and provenance
- File name
- C1_RFQ_SEND_20261004.md
- Format
- Text
- Code signing
- Not applicable to this file type
- Size
- 5.0 KB
- Last analyzed
- Oct 5, 2026, 4:41 PM UTC
ca3c17c79ab4ac4154a18f2103a43d0217d87d20bcde81703333a7cd615f9449Safety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
Open it only when its sender or download source is one you independently trust.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is C1_RFQ_SEND_20261004.md safe?
What is C1_RFQ_SEND_20261004.md?
How many antivirus engines detected C1_RFQ_SEND_20261004.md?
What is the SHA-256 hash of C1_RFQ_SEND_20261004.md?
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Community
Member reviews and reports for this exact file hash.