PDF malware analysis — malicious · 579be7aec9cc3c81

MALICIOUS

PDF

45.8 KB

MD5: 269f265ea5ac9179d0aea142894e463f SHA-1: 2a46dac510218ba901da6bb5eb8329a17630dcde SHA-256: 579be7aec9cc3c812dc217130cf0c87a380602699723bf103cf7aba2f4df5135

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript that utilizes the Collab.getIcon method to trigger CVE-2009-0927, a known vulnerability in Adobe Reader. The JavaScript is obfuscated and decodes further layers, ultimately aiming to execute a second-stage payload. The primary IOC is the specific CVE exploited.

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` `ab960f7cf8532b5bfa069f1e12f264620ad60bdbe96c2410c9f22bcd80566e05`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `4d94e91ad6886dbb703fe8057e2f6da97068db87c7111c595b3c266d3a8ee33a`	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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