PDF malware analysis — malicious · 9b15be689aa77ec1

MALICIOUS

PDF

7.3 KB

MD5: b14597caa47cf46eb5d370444ed14ed5 SHA-1: 139e4d7ae554c6c5cbdc27914c45c397cfe4a2e6 SHA-256: 9b15be689aa77ec1ef02c0e69459aae353b98f00bd11f75cc318a4dd1e347b9c

178 Risk Score

Malware Insights

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of the CVE-2009-0927 heuristic, specifically targeting the Collab.getIcon method, confirms the exploitation of a known vulnerability. The unescape() call further suggests obfuscation of the embedded JavaScript, which is likely responsible for downloading and executing a secondary payload. The extracted artifact 'javascript_obj0006_000.js' is the embedded script.

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` `77c3e898eb55ff8a4e7f498c4680f2bf65d74d8975a59b04dd36573134aa7485`	pdf-javascript-stream	PDF /JS object 6 at offset 0x191	6128 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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