RTF / .DOC malware analysis — malicious · f4d9e5ddca3444e2

MALICIOUS

RTF / .DOC

1.02 MB

MD5: 21b9f05eadd859677d470f1eb6d961c3 SHA-1: de601328b24e39d14dacb60ebe53cd47cdd7adda SHA-256: f4d9e5ddca3444e2062f930675c49dbd3e1a73e3936b326a8edfe7090ce16b98

220 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The sample is an RTF document containing multiple embedded OLE objects, with high-confidence heuristics indicating automatic linking and update triggers designed to activate the embedded content. The 'SE_ENABLE_LURE' heuristic confirms the document instructs the user to enable macros or editing, a common technique for malware droppers. The excessive hex data within the OLE objects suggests a hidden payload. No specific family is identifiable, but the delivery mechanism is clearly macro-based execution of embedded objects.

Heuristics 7

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.
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX

RTF contains ~1037KB of hex-encoded data inside \objdata sections — may hide a payload
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_off00000bad.bin` `f10606bf2b31a4c54bcd893181ce5658332ee48ef80a95097e6f0562b8711bc2`	rtf-objdata-decoded	RTF \objdata at offset 0xBAD	408296 bytes
`objdata_01_off0000735c.bin` `db5be4f893bfcc9ec7d692addda06615c2e43f147c29e22e2806ab2ea5d34672`	rtf-objdata-decoded	RTF \objdata at offset 0x735C	408269 bytes
`objdata_02_off000d692d.bin` `51ef705eef602ac6eb91c2063c8f50d4e54b5e051b60429031d41133bc7df645`	rtf-objdata-decoded	RTF \objdata at offset 0xD692D	2632 bytes
`objdata_03_off000d7ed0.bin` `e8d4fe950caed6dcfde26f4b616825bbe11b93458425974b7d075167f675abf7`	rtf-objdata-decoded	RTF \objdata at offset 0xD7ED0	12297 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.