PDF malware analysis — malicious · 401c4707becc304e

MALICIOUS

PDF

6.3 KB

MD5: 237066264d0f9838bf6c28cca727666c SHA-1: b319a7c09fc89154a34ceab1f4a85fbb9edf5ccf SHA-256: 401c4707becc304eb354d10ceb462b46a094d875b143e2f97df45b9ea03dd67f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2009-0927) related to Collab.getIcon. The presence of JavaScript and the specific exploit indicate the document is designed to bypass security measures and execute malicious code upon opening. The obfuscated nature of the JavaScript stream, as noted by ClamAV's detection of 'Heuristics.PDF.ObfuscatedNameObject', further supports the malicious intent to download and execute a secondary payload.

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` `478e51221fb6e7dc07545b9b0e6cb873183fe2dfb0ce82908863eb4d98418b8a`	pdf-javascript-stream	PDF /JS object 6 at offset 0x197	5282 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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