PDF malware analysis — malicious · 41bd5d9bac066c7a

MALICIOUS

PDF

45.8 KB

MD5: 6be01030e27ffcb2d0fc5804e3358d88 SHA-1: 07b7057412d7f4e8d1cc10cab5ceaa0cd25ebf44 SHA-256: 41bd5d9bac066c7a283252d80b733a4acef585c6f49d2ee010d6b55e6f8a5e05

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File Execution: Malicious JavaScript T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript that leverages the Collab.getIcon method to exploit CVE-2009-0927 in Adobe Reader. The JavaScript is heavily obfuscated with custom Base64 decoding and multiple layers, indicating an attempt to hide its malicious intent. The ultimate goal is to execute a second-stage payload, likely downloaded or unpacked by the deobfuscated script.

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` `a34f8c854366612c61d6a5c4988ad3a8e462873b51e0a4824b9101bb6e918983`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `e267aba4a67daf68087797ed43d810fa95604d99550ca38362b8678065d524c3`	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).

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