Malicious RTF — malware analysis report

Static analysis result for SHA-256 88bc64e5717a856b…

MALICIOUS

RTF

298.4 KB Authoring application: Msftedit 5.41.21.2510 First seen: 2014-07-06
MD5: fe78ff52af137e85b04ca7b6ca033713 SHA-1: d214624809b7d99aa5136330f868c7afca3a48be SHA-256: 88bc64e5717a856b01a04684c7e69114d309d52a885de9fc759e5a99ac20afd5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains multiple embedded OLE objects, including a package object. ClamAV specifically detected this file as Rtf.Exploit.CVE_2012_0158-22, indicating exploitation of the CVE-2012-0158 vulnerability. This vulnerability allows for arbitrary code execution when a user opens the malicious RTF document.

Heuristics 5

  • ClamAV: Rtf.Exploit.CVE_2012_0158-22 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2012_0158-22
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • OLE object data medium RTF_OBJDATA
    RTF contains 5 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000f2.bin rtf-objdata-decoded RTF \objdata at offset 0xF2 4175 bytes
SHA-256: c021ca1e645b2287292bbabd5f9633b135fa02739e0f3f93fe3826fccf15db9a
objdata_01_off000022a7.bin rtf-objdata-decoded RTF \objdata at offset 0x22A7 127760 bytes
SHA-256: 683e3c33006a50c59e52998981999820e33b8e6cb839783df603f7fa88b8e80f
objdata_02_off0004220a.bin rtf-objdata-decoded RTF \objdata at offset 0x4220A 440 bytes
SHA-256: ea5d234f81e7c6f4d2681a1e14ba35656c4caea1ff0358220f369a5f5b5ba6da
objdata_03_off000425a0.bin rtf-objdata-decoded RTF \objdata at offset 0x425A0 4824 bytes
SHA-256: 61ba1cd8a599041916c9d0f1cd1cadd6d95f3a3dc204e1664a0585ac6fc5d7ca
objdata_04_off00042934.bin rtf-objdata-decoded RTF \objdata at offset 0x42934 2351 bytes
SHA-256: 3dc8420da6b994fd419d7cfdfc0367e347304c1db04969391dd1aee827839010

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