PDF malware analysis — malicious · 4fef90a6d90700ac

MALICIOUS

PDF

7.0 KB

MD5: da7513371214fb91f147da70001d4acb SHA-1: 9e438aab828c2a530908ed6591074e382bca98c0 SHA-256: 4fef90a6d90700ac3f58fef4725b6a3ac4d499910a073ffbb7d449d613b0ae54

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-0927, indicating an exploit attempt. The presence of JavaScript actions and streams, along with a ClamAV detection for obfuscated objects, strongly suggests that the file is designed to execute malicious code. The primary intent appears to be leveraging the CVE-2009-0927 vulnerability to run arbitrary JavaScript, which is commonly used to download and execute further stages of malware.

Heuristics 6

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. (matched in decompressed stream)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `39b3cc99eff43c712d837f9fb4cbd9f7078cce29e413e04523031821c3665818`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A1	5796 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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