Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 4df6230fd8d63d23…

MALICIOUS

RTF / .DOC

18.8 KB First seen: 2026-02-12
MD5: bca5c4b1481d36e1a8e0f87b7a35b195 SHA-1: dcdd263321354593cdd16df2f56b85ae035a4966 SHA-256: 4df6230fd8d63d2364866be92ad8cffc07ef6b1c37b9373bf57e0924a319ab53
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is designed to be activated automatically, which is a common technique for exploiting vulnerabilities in applications that process OLE objects, such as Microsoft Office. The embedded object itself is a binary blob that was decoded from the RTF, and its presence strongly suggests an attempt to deliver a secondary exploit or payload. No document body text or scripts were extracted, limiting further analysis of the specific lure or payload.

Heuristics 2

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000008a5.bin
8143c78dd03b325932041a4ec280de1b89410e1b34f4df8dba7e74d0d5438437
rtf-objdata-decoded RTF \objdata at offset 0x8A5 3682 bytes