PDF malware analysis — malicious · 1ed53f1c3de17499

MALICIOUS

PDF

3.7 KB

MD5: 89918d19c512e8da667881e17706e152 SHA-1: de00369b276c3088ea93efb7448711f8930ec804 SHA-256: 1ed53f1c3de17499a0d7b26699497f9c39f53838f42ee97c7c0f8e92bc99b34d

158 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_UNESCAPE suggests obfuscated JavaScript code is being executed. Crucially, the CVE_2009_4324 heuristic firing on media.newPlayer points to exploitation of a known vulnerability in Adobe Reader. The embedded JavaScript likely attempts to download and execute a second-stage payload, although the exact URL or payload could not be reconstructed due to obfuscation.

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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `57d6f7760a0de3a2408f714a3e5b87251ace5e3d61df077f16be21a294e5d753`	pdf-javascript-stream	PDF /JS object 8 at offset 0x217	533 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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