PDF malware analysis — malicious · 78f853a43a9d2dbf

MALICIOUS

PDF

1.4 KB

MD5: e03983a6570e43ef65805264329b8d8e SHA-1: b1c8d0f21a4084d635126b6ed2c40b6aa8625369 SHA-256: 78f853a43a9d2dbff82c0e9034bb15dbdd48c8c326816eb79d032942078ccfee

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability via the media.newPlayer object. This vulnerability allows for the execution of arbitrary code, likely to download and run a second-stage payload. The JavaScript stream was obfuscated using unescape() and contained indicators of script obfuscation, further suggesting malicious intent.

Heuristics 5

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)
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` `d6601e66e2ffe14089e84b349dc7118d1daa5322243bd19454b78fff5e81c672`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1286 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` `c9337ee28b2abb0009ea3859cee148dcb06b3bd727aafe08a192bafc2c67c46c`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x485	278 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.