PDF malware analysis — malicious · b95a50d78ce4f552

MALICIOUS

PDF

1.4 KB

MD5: c63f8f30327ac0c5d4999e423d3c85ff SHA-1: eb06e466eabb3f03eaf77626d1f1d8ae748c9a51 SHA-256: b95a50d78ce4f5525ce0926c1c17a4cddb9625bb2334980395581cfc7522c6ef

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media player handling. The JavaScript is obfuscated, but the presence of the unescape function and the specific CVE firing indicate an attempt to execute malicious code. The primary goal appears to be exploiting this known vulnerability to gain initial access.

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` `3e786ac6948f67f0880e851d1c31d9c68662e71ee44be6390c9569748cbfc57e`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1264 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` `0c34541d6519225f37d8a24133b23478d3d741a5643be53dd6b7dd685dbc67fe`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x487	261 bytes

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