PDF malware analysis — malicious · b836eaa34da89e7b

MALICIOUS

PDF

45.8 KB

MD5: 01db61010cf786f68e0c263b59b9a02e SHA-1: 3c0350404662a1c48e035b93ca40a2bb9b0e2c05 SHA-256: b836eaa34da89e7b5071b72dc28d29e164abd714eb5d2a0cf71c69492d1bf182

98 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains obfuscated JavaScript that exploits the CVE-2009-0927 vulnerability in Adobe Reader using the Collab.getIcon method. The script decodes multiple layers of obfuscation to reveal and execute a second-stage payload, indicating a downloader or dropper functionality.

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)
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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `3d607f282ea4171a4b6f88103e815ea19f1fa74ee5eae7acea4cb037de495416`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `82c77be19621d401bafc3e37bb8a1ad829e5b8bc8bd4f1722dfb1406dbcf1a6e`	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.