RTF / .DOC malware analysis — malicious · 7fd0d5d4d28ae153

MALICIOUS

RTF / .DOC

241.5 KB

MD5: 8d2c39a1c65d1d9d1c43b341c18cd555 SHA-1: f90076599865645ff9434998d71d37569371cc80 SHA-256: 7fd0d5d4d28ae153760ff1db3f21d11957a7967f6d6539d2781bab47a4a5f1d5

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1204.002 Malicious File

The RTF document contains multiple OLE objects, including an automatically linked object that is forced to update. This technique is commonly used to bypass macro security and execute embedded malicious content. The heuristic 'SE_ENABLE_LURE' further suggests the document attempts to trick the user into enabling content. No specific scripts or URLs were extracted, but the OLE object activation is the primary attack vector.

Heuristics 6

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.
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\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 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000969.bin` `4b1f73dd90984dd57db6e1ae092c994613d558a58185f3954560a685bfc1a52a`	rtf-objdata-decoded	RTF \objdata at offset 0x969	26658 bytes
`objdata_01_off0000e2a2.bin` `9d9bc825f2fa5e0ed8db7dce6823e199ad9c775873472d42887214589f205470`	rtf-objdata-decoded	RTF \objdata at offset 0xE2A2	2632 bytes
`objdata_02_off0000f845.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0xF845	12297 bytes

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