RTF malware analysis — malicious · 9a157a839bfb8ec2

MALICIOUS

RTF

2.50 MB Authoring application: Msftedit 5.41.15.1515

MD5: c5076c166c09aab2d403764d39130534 SHA-1: aaf02cfdb326d4a9f7b39f0a9771be1110f6ba13 SHA-256: 9a157a839bfb8ec2472ac1561923047f5382139085e90a34f86480e9fedfe527

182 Risk Score

Malware Insights

MITRE ATT&CK

T1559 Component Object Model and Distributed Component Object Model T1559.001 Component Object Model and Distributed Component Object Model: Component Object Model

The RTF file contains a large amount of hex-encoded data within an OLE object, which is highly suspicious. This data decodes to a PE file, indicating the RTF is likely a dropper or downloader for a malicious executable. The presence of RTF_MZ_HEX and RTF_EXCESSIVE_HEX heuristics strongly suggests a hidden payload.

Heuristics 6

PE header (with DOS stub) in hex data critical RTF_MZ_HEX

Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
Package object class high RTF_OBJCLASS_PACKAGE

OLE Package object — can wrap arbitrary files
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX

RTF contains ~2622KB of hex-encoded data inside \objdata sections — may hide a payload
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Suspicious extracted artifact info 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000000d2.bin` `42992084c63ca24f0c038d058ec05850267805e4fb46948f02503d33231e9459`	rtf-objdata-decoded	RTF \objdata at offset 0xD2	1278453 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.

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