Rtf.Exploit.CVE_2017_11882-6584355-1 RTF malware analysis — malicious · 0a15c7301dc5950e

MALICIOUS

RTF

9.2 KB First seen: 2018-07-14

MD5: ae3888b6867af5a6165b0e61e732d76b SHA-1: 6025fb15a302b8ee68cb1d142d55a8cee9278d09 SHA-256: 0a15c7301dc5950ea0c1076259a9e8a23d6731a6b00394f723b3d7a9d794dcd8

240 Risk Score

Malware Insights

Rtf.Exploit.CVE_2017_11882-6584355-1 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains embedded OLE object data and triggers the ".objupdate" directive, indicating an attempt to activate embedded objects. Heuristics specifically identify the Equation Editor CLSID and ClamAV detects this as Rtf.Exploit.CVE_2017_11882-6584355-1, confirming exploitation of a known vulnerability for client execution. The embedded binary artifact suggests a shellcode payload.

Heuristics 6

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
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.
ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
\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_off0000003b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3B	4668 bytes
SHA-256: `dbdb5817ceca8663f40b6b114919a30daa28103c5ffba85a86dacf46486baeac`
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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