Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 d151ef1ffaae0eb3…

MALICIOUS

RTF / .DOC

8.6 KB
MD5: 2f0f8f97f6e6799417695f9fb7607594 SHA-1: 181a953529d81ebd8866b4f363b891729f447131 SHA-256: d151ef1ffaae0eb3a3209bae70fb19226395c62eb456d442a6fc8e93b71b1767
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is an RTF document that contains embedded OLE objects, specifically triggering heuristics related to Equation Editor and OLE activation. ClamAV explicitly identifies this as Rtf.Exploit.CVE_2017_11882, indicating a known exploit targeting a vulnerability in Microsoft Equation Editor. No document body text or scripts were provided, but the heuristics strongly suggest an exploit delivery mechanism.

Heuristics 6

  • 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.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • 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 2 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000009e.bin
2574cc8633627e8bee59734b04b9cae78441d5aaed1c57769341a116896e6b6e
rtf-objdata-decoded RTF \objdata at offset 0x9E 4179 bytes