PDF malware analysis — malicious · de7ffa7fdb369133

MALICIOUS

PDF

1.4 KB

MD5: 9fa76573f770945be14fab5d8425c83f SHA-1: 84e30d7b732d9ff3faf9c009872c681569271f43 SHA-256: de7ffa7fdb36913352415046371ce5b5cac31bb0cf7d1ea68be400a44b85f184

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution

The PDF file contains embedded JavaScript, which is triggered by a CVE-2009-4324 exploit targeting the media.newPlayer object. The JavaScript is obfuscated, but the presence of the exploit and the JavaScript action strongly indicate malicious intent. The primary attack vector is likely user interaction with the PDF, leading to the execution of the exploit.

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` `85104f4248f5930626421a09bb01d3bbe3c80917ca1a0161b6b6249d1c9885e0`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1259 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` `9b7d14789cb1952c39f2580e1c615f7e11a9e3ba622658b36e7e956529009d5a`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x485	264 bytes

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