PDF malware analysis — malicious · e25248cd3bcd55d7

MALICIOUS

PDF

1.4 KB

MD5: 3ab8163fee6c861776a420d880ebf547 SHA-1: ed3c3c2bb736650d9a8c5ebe12f008326f8c1b2c SHA-256: e25248cd3bcd55d7e9053a445146363679a6d6f37a1099f1363f82a4569ebe87

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is triggered by the 'media.newPlayer' object, indicating exploitation of CVE-2009-4324. The JavaScript streams, particularly 'javascript_obj111111_000.js', are obfuscated but likely responsible for downloading and executing a secondary payload. The presence of 'unescape()' further suggests code obfuscation to hide 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` `18cef282f30a9ab101bde92eb2acdad96a097cd67f41439abffcf25d3f22a509`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1242 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` `4d5e590b3fc917c1b1544a15966ad7434bbc46b87538566e026d34baaedf61ea`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x482	248 bytes

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