RTF malware analysis — malicious · 7d327035b6ae1346

MALICIOUS

RTF

6.01 MB First seen: 2021-06-17

MD5: fbe20d11a929c6e1ecf1895d529a99c8 SHA-1: c22c29a609f03c10dcfb7cf1ed283375e5b2f115 SHA-256: 7d327035b6ae1346b2ecc38dee597a430ffda147418ddb8f9216194bc0f552d5

262 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains multiple indicators of exploitation, including OLE object data, Equation Editor CLSID, and objupdate forcing OLE activation. These point to the exploitation of a vulnerability, likely CVE-2017-11882, to execute arbitrary code. The extracted artifact signals a shellcode URL, indicating the file's purpose is to download and run a secondary payload.

Heuristics 7

Equation Editor CLSID critical CVE likely RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM

RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
Suspicious extracted artifact critical 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.
\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 2 \objdata section(s) — embedded OLE objects
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 https://bit.ly/3x4FIta In RTF body

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0035b9eb.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x35B9EB	802004 bytes
SHA-256: `f8644a95bc366a9c210e378fe1995769aa061fbbe645995f8edf154dd9ae3824`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered URL(s): https://bit.ly/3x4FIta
`objdata_01_off0035bc12.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x35BC12	63 bytes
SHA-256: `42d9af0323fb97aca6e24db96944bb9329e910997aef5ab319c3e8db0d113cfb`

Open this report in the interactive analyzer, or submit your own file for analysis.