RTF malware analysis — malicious · 29e439d60f7fd1fb

MALICIOUS

RTF

314.2 KB

MD5: e5e047cebac68adab0767c248ea09b7f SHA-1: a51bebabd029ce486d64647f75dfbd4951ce7178 SHA-256: 29e439d60f7fd1fb2203ec8cc1a4fdfcdacd78863bccc859ef2774e005f42715

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The RTF file contains multiple OLE object heuristics, including automatic linking and update triggers, indicating it's designed to activate embedded content. The document body explicitly instructs the user to 'Enable Editing' and 'download the document', which is a common lure for macro-enabled malware. The presence of embedded OLE objects suggests the potential for executing arbitrary code or downloading further stages.

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 4 \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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000965.bin` `c9f0c696afa29b4fae7db098082965c0577e44eb113cb07d227609349cf4b3e0`	rtf-objdata-decoded	RTF \objdata at offset 0x965	49687 bytes
`objdata_01_off00007114.bin` `fd97cb0f9a2fa4f20d713c2e4a174893fe859dd0e04a8b289f5be946eea99380`	rtf-objdata-decoded	RTF \objdata at offset 0x7114	49660 bytes
`objdata_02_off00020531.bin` `3cd3b7d42e5855c90d6d11c54ef2670ed8970441480cc23f7d39ef08fa1c935b`	rtf-objdata-decoded	RTF \objdata at offset 0x20531	2632 bytes
`objdata_03_off00021ad4.bin` `e8d4fe950caed6dcfde26f4b616825bbe11b93458425974b7d075167f675abf7`	rtf-objdata-decoded	RTF \objdata at offset 0x21AD4	12297 bytes

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