PDF malware analysis — malicious · ebf194e6ceaa9dcd

MALICIOUS

PDF

45.8 KB

MD5: 66eeb8939b320d24f58bc428c95bd76a SHA-1: 2db146385ffc40595da9d0cedb92d5bf82081cc2 SHA-256: ebf194e6ceaa9dcdaf4f3717f20bddb515a9b5f9797c9acc7ffb2468067ef8c0

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious JavaScript T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript that exploits CVE-2009-0927 using the Collab.getIcon method. The JavaScript is obfuscated and decodes further layers, ultimately executing an exploit stage designed for Adobe Reader. This indicates a downloader or dropper functionality, aiming to fetch and run additional malicious content.

Heuristics 5

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
Suspicious extracted artifact high 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.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `d13b4aa7eae8167b00691b58a956d0e3ccd544b195d03e98986b042de930f7f3`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `3e90ea682bcc4b7106d03532ee26c7f559f874d58ac6edd0de4dd31295de4bbf`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1517 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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