PDF malware analysis — malicious · ea9143718ecb3d5f

MALICIOUS

PDF

6.7 KB

MD5: f6ec5410f19d58f88a241c5c760aa1fd SHA-1: c67b2f23d4df590d867f1d27e573ae5e712a9934 SHA-256: ea9143718ecb3d5fb4088db79f07b31c5acff87e84cedb46fd44c3fec0905961

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 User Execution: Malicious Link T1204.002 User Execution: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical CVE-2009-0927 vulnerability was detected, suggesting exploitation via the Collab.getIcon method. The embedded JavaScript stream was obfuscated and contained an unescape() call, further pointing to malicious intent. The primary function of the script appears to be exploiting this vulnerability 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` `846537ece3cfcc3da4ba6541ef75d2fe8aab8d81f6b8fca6383bce6b635900d9`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19B	5790 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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