Office (OLE) / .DOC malware analysis — malicious · 0df70a7295e5c502

MALICIOUS

Office (OLE) / .DOC

215.0 KB Created: 2010-03-02 04:03:00 Authoring application: Microsoft Office Word

MD5: 81b535390ba2e5e58b19f2aead0235b7 SHA-1: c74be55501d9a77ed3d52af00020bf453ed03e63 SHA-256: 0df70a7295e5c502dc5828f55c3355dcb9ea0cc3bd1493f7ffba61e99eb3c5b2

304 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The sample is a Microsoft Word document containing an embedded executable file (PE). Heuristics indicate exploitation of CVE-2007-3899 and the presence of Ole10Native, a common method for embedding and executing files within OLE documents. The embedded executable is likely a second-stage payload, and the document's text is minimal, suggesting a lure to encourage the user to interact with the embedded object.

Heuristics 8

CVE-2007-3899 — Microsoft Word malformed string memory corruption critical CVE likely CVE_2007_3899

Word OLE document has the MS07-060 malformed-string exploit shape: a Word 97-family FIB points to a malformed DOP/string-table region with an abnormal INT_MAX run, inflated text counters, and exploit payload or Mdropper.Z campaign evidence.
OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514

Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
Embedded PE executable critical OLE_EMBEDDED_EXE

MZ/PE header found inside document — possible embedded executable
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.
Reference to LoadLibrary API high SC_STR_LOADLIBRARY

Reference to LoadLibrary API
Reference to GetProcAddress API high SC_STR_GETPROCADDRESS

Reference to GetProcAddress API
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/drawingml/2006/main

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_office_00003490.exe` `58cfdc7b616b7b4e9c09a512259eba926fcbcdf5e20db332f7c530c29c65e00a`	embedded-pe	Office MZ+PE at offset 0x3490	206704 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.90, consistent with packed or encrypted content.
`ole10native_00.bin` `1c3948ce198efc71142ab05881a3e0bb131c6e2a9b9d2d5c5b5314bd8e05227a`	ole-package	OLE Ole10Native stream: ObjectPool/_1329047396/Ole10Native	198542 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.95, consistent with packed or encrypted content.

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