PDF malware analysis — malicious · d594cb2b938bb980

MALICIOUS

PDF

1.4 KB

MD5: a8947650159979cf336599e9fe84b50a SHA-1: f08b9c065506c6897af56781697ef58752cdd2f5 SHA-256: d594cb2b938bb9806c6b00353b017f1b8320f72670a7e3db4df7ef4655187628

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape function and targets CVE-2009-4324 via the media.newPlayer object. This JavaScript is likely responsible for downloading and executing a second-stage payload. The heuristics indicate a suspicious extracted artifact with obfuscated script content. No specific malware family could be confidently identified.

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` `553039d26eb97f98f57e720790d2eb23929428204e45e77695cd0d93a5a22a14`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1256 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` `610eb0873a039024a5223e941fef679613e0d33c18f1e186ea894d51893e869d`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x488	253 bytes

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