Office (OOXML) malware analysis — malicious · 8fa8850e6a7d41c7

MALICIOUS

Office (OOXML)

461.0 KB Created: 2014-07-18 09:40:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2021-06-20

MD5: e8e2ed50c4dd403aa1054f133a04d881 SHA-1: 8e3f0f96f34408b4560c5b4e1af970b69bb931d0 SHA-256: 8fa8850e6a7d41c7581de3bd36adf0b4269f2d1948d87416c185f413fdd926c5

204 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The OOXML document contains an embedded OLE object with indicators for exploitation, specifically flagged as a likely CVE-2026-21514 shape. This embedded object is identified by ClamAV as Win.Trojan.Remotemanipulator, suggesting it's designed to execute a malicious payload. The document body's content is a lure for a website development task, which is likely a pretext for delivering the malicious payload.

Heuristics 5

ClamAV: Win.Trojan.Remotemanipulator-9849652-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Remotemanipulator-9849652-0
Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE

OLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
Embedded OLE object medium OOXML_OLE_OBJECT

Document contains an embedded OLE object
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://schemas.openxmlformats.org/markup-compatibility/2006 In document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject1.bin	519168 bytes
SHA-256: `34514141d21653fb5fe2e20aee50546b16d37d95493d36be22c416734dcb31cd`
Detection ClamAV: Win.Trojan.Remotemanipulator-9849652-0 Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	512069 bytes
SHA-256: `aece7e1d4ff17e9a9b572ade27576ef801f10c2d9836587321d0297297055898`
Detection ClamAV: Win.Trojan.Remotemanipulator-9849652-0 Obfuscation or payload: likely Carved artifact entropy is 7.82, consistent with packed or encrypted content.

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