PDF malware analysis — malicious · a9b4178930681df3

MALICIOUS

PDF

96.6 KB

MD5: 086b432592bcf9d199f6906fafb93e71 SHA-1: 9bc5aed5887b72638618230696d1d78c82185536 SHA-256: a9b4178930681df307d859527b6541c0af0282db6d9d0d7fa5e9b4a02e2abfe7

178 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript and triggers critical heuristics related to CVE-2009-0927, specifically the 'Collab.getIcon' method. This indicates the file is designed to exploit this vulnerability in older versions of Adobe Reader to achieve arbitrary code execution. The presence of multiple large JavaScript streams and the ClamAV detection further support this conclusion.

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.
ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `4e021ee5e97a99dcc4d73d305b61334fe3c98a56c840f425dac2095600674b52`	pdf-javascript-stream	PDF /JS object 1 at offset 0xE	98641 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`javascript_obj0001_001.js` `4a36de52c775515d68f31a2b3ae244f3b8b9a114dfe1ddf26d8e4761085b2942`	pdf-javascript-stream	PDF /JS object 1 at offset 0xE	96791 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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