PDF malware analysis — malicious · 208a31b47be33dd0

MALICIOUS

PDF

1.4 KB

MD5: 07f2be1b205516145d182470db1db1a0 SHA-1: e7f1690ea7ebc2d107dc2bead2dd767da570163c SHA-256: 208a31b47be33dd0532541a29bb2b100790de9fdb8ff56b60ae091f9e070e785

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript that utilizes the unescape() function, indicating obfuscation. A critical heuristic firing points to CVE-2009-4324, a known vulnerability in Adobe Reader related to media player handling. This suggests the file is designed to exploit this vulnerability to execute malicious code, likely downloading a second-stage payload.

Heuristics 6

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-15905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-15905
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `4a97cbb7a1a7acd00671dcf1e8b86b8065f871362c71e5ff29f210fd2e781f0b`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1253 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `fef0e0c4d8db3daa587b355792c04370ec29fe578014f43be77b5f59babb5089`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x488	262 bytes

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