PDF malware analysis — malicious · ad38de5e0c41b524

MALICIOUS

PDF

6.9 KB

MD5: 4a930f81f9190ffb4dc35c66d4e31865 SHA-1: cbb720b75a6cbb817ad8b8e3d6f1c68825259ff6 SHA-256: ad38de5e0c41b524216ce88183766fd92cef4df0bcd1d80022220ed6326932cd

138 Risk Score

Malware Insights

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-0927 (Collab.getIcon). This indicates the document is designed to exploit this vulnerability to execute arbitrary code. The embedded JavaScript stream, further processed by unescape(), strongly suggests the intent is to download and execute a second-stage payload, a common technique for malware delivery.

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)
unescape() call high PDF_UNESCAPE

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

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `ccbb929636180e88b7740b975f443d650e4d936cbc91a51e4c91479fd4ea7bda`	pdf-javascript-stream	PDF /JS object 6 at offset 0x12D	8173 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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