RTF malware analysis — malicious · 73c6906adadd0574

MALICIOUS

RTF

4.0 KB First seen: 2020-02-04

MD5: cd59e3c4876105398d8806e93a3b4f3c SHA-1: b6f8222c8f173123c2c86e14d64bb204e9774490 SHA-256: 73c6906adadd0574ebe0fa0dc01d63bd18acb72f275fccb71605d9a22a5b168e

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF document contains an OLE object with embedded data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJupdate heuristic suggests that this object is configured to automatically activate, which is a common technique for executing embedded exploits or payloads. The extracted artifact, objdata_00_off00000070.bin, is flagged as a potential shellcode candidate, further supporting the malicious intent.

Heuristics 3

\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
Suspicious extracted artifact medium 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_off00000070.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x70	1971 bytes
SHA-256: `b4045a530d53d9aa4d168a6bb37595ceb6020c23f71e9b4f64fcdb6d9e3ec49e`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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