RTF / .DOC malware analysis — malicious · 7dfcdee064e56ac9

MALICIOUS

RTF / .DOC

384.6 KB

MD5: 702f0e70a6182ddd092e75b604bbfb5a SHA-1: 077f35e3b32c61614a4b272990323befe18f3668 SHA-256: 7dfcdee064e56ac9f73b29800da34c650614560e654cd82ffdf71083ce7a2108

140 Risk Score

Malware Insights

MITRE ATT&CK

T1559.002 Component Object Model Hijacking T1204.002 Malicious File

The RTF document contains multiple OLE objects, with specific heuristics indicating the use of \objupdate and Composite Monikers, strongly suggesting an attempt to exploit OLE object activation. The embedded artifacts, particularly objdata_00_off000007d0.bin, are likely the payload. No scripts were extracted, and the document body contained only formatting tags, making the OLE object exploitation the primary indicator of malicious activity.

Heuristics 5

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.
\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
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000007d0.bin` `aea16cc23bfac9fec627766bb0150b414b2a90e4835412efaa5ee4fead5d1dfe`	rtf-objdata-decoded	RTF \objdata at offset 0x7D0	97943 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off00032437.bin` `cfa30f8d6901f15ceef342c652e9149c37d923eba0170aa3db4a24b45286c4af`	rtf-objdata-decoded	RTF \objdata at offset 0x32437	2632 bytes
`objdata_02_off000339da.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x339DA	12297 bytes

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