PDF malware analysis — malicious · d20e6105d0ba1276

MALICIOUS

PDF

1.4 KB

MD5: 38d09e4593768c96731bcb234ff4bef1 SHA-1: f77affaac03efd86e77c4255863969ad7f22cb22 SHA-256: d20e6105d0ba12768ed92cd21322460d3e1b56f5e46e372734c8a1a08214c8c6

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape() function and targets the media.newPlayer object, indicating exploitation of CVE-2009-4324. This vulnerability is commonly used to execute arbitrary code. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although the exact nature of the payload cannot be determined from the provided evidence. The heuristic firings strongly suggest a malicious PDF exploiting a known vulnerability.

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` `70b02c7f22f1cab710cce73f7f8bf6afe99b4802b4e0109fdbbcd380967a4fc7`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1270 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` `eec018015ae15f9052dc5084eafa0b842b30f1fec425556cccb4e350fbc920c4`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48C	255 bytes

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