PDF malware analysis — malicious · 976e1c9f5c263b5e

MALICIOUS

PDF

1.9 KB

MD5: f1e7ec8a9ddf8bc6bc321523bb81d642 SHA-1: 53a013f07fbbc0e5e5419722eb2d8cd5acc6d434 SHA-256: 976e1c9f5c263b5e849a6668cae28a4053c424bc8289dfcc29a02e41c8923565

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape function and targets the media.newPlayer object, indicating exploitation of CVE-2009-4324. The JavaScript is obfuscated, but the presence of exploit code and a ClamAV detection signature (Pdf.Exploit.JSCode-1) strongly suggests malicious intent. The script likely attempts to download and execute 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.
ClamAV: Pdf.Exploit.JSCode-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.JSCode-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_obj0005_000.js` `4acbab9938f0aad0e7a8853c19bf2029286d16ffd02e4720419f47847386a360`	pdf-javascript-stream	PDF /JS object 5 at offset 0x10A	1478 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0005_001.js` `66b0e774d674fcf97f0a730404863c25d04e72e02edcf7e6c2a4581b1295b317`	pdf-javascript-stream	PDF /JS object 5 at offset 0x10A	40 bytes

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