RTF / .DOC malware analysis — malicious · 455af9180f83ac2b

MALICIOUS

RTF / .DOC

229.2 KB

MD5: 4cd4423a36b8f7d1375ec7478d3c0186 SHA-1: 8e7cc411cc89a35689782b4fcdedec473c159d13 SHA-256: 455af9180f83ac2ba91fd77b48592679cdaf79c7d70a2251ab19d7edd15338f7

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are designed to activate embedded content. The presence of a 'Macro/content-enable lure' heuristic indicates the document likely instructs the user to enable macros or editing to trigger the malicious behavior. This suggests a delivery mechanism aimed at social engineering the user into executing a payload.

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_off00000965.bin` `2b3b13e6aaa02c4f5095a061edc065329c9a06a5c88174c4dc8f6cd71e602801`	rtf-objdata-decoded	RTF \objdata at offset 0x965	20575 bytes
`objdata_01_off0000b132.bin` `1af484323aa51f0bc067b498458ed2106db428c7b743185ac9a6e18e7b648e31`	rtf-objdata-decoded	RTF \objdata at offset 0xB132	2632 bytes
`objdata_02_off0000c6d5.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0xC6D5	12297 bytes

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