RTF malware analysis — malicious · 04a63743e3bbf130

MALICIOUS

RTF

445.5 KB

MD5: c3f70c195f75e18b7162df93a6a31950 SHA-1: 0f6c4bf29123a2cfdf42cce1963e49d2da7d064a SHA-256: 04a63743e3bbf1302a62d8bec247935e445fc9d9d91fe7bbcbe6442b1e2a22a3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains embedded OLE objects, indicated by RTF_OBJDATA and RTF_OBJEMB heuristics. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be activated, likely leading to the execution of arbitrary code. The extracted artifact 'objdata_00_off0000114c.bin' is a strong indicator of a malicious payload. The lack of document body text or scripts prevents a more specific analysis of the attack's intent or family.

Heuristics 4

\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
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000114c.bin` `8e4cadb943868244de71476d9cafe01866a2344eab79d64fb47e5dfe808472f6`	rtf-objdata-decoded	RTF \objdata at offset 0x114C	129077 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.97, consistent with packed or encrypted content.

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