PDF malware analysis — malicious · fcf64d62ac80a4c2

MALICIOUS

PDF

3.2 KB

MD5: 899b976e8d24bcea9ccd9e442363a763 SHA-1: 5dd8347744819a4ee9d292ed6558c0f191213e26 SHA-256: fcf64d62ac80a4c21cdbf835c6317a7bbf95e68ca39076ddae8e4082091cfd6b

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, which is a common technique for exploiting vulnerabilities. The critical heuristic firing for CVE-2009-4324 indicates the use of a known exploit targeting the media player functionality in older Adobe Reader versions. The embedded JavaScript likely attempts to leverage this vulnerability to download and execute a secondary payload. The presence of unescape() calls further suggests obfuscation of malicious code.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `32c93bca653f0642f597270e383d135cbf8663836727b20fd2cdaf3902719dca`	pdf-javascript-stream	PDF /JS object 9 at offset 0x1EC	211 bytes
`javascript_obj0010_001.js` `5483dfab4f96975aea3ec28ffd2a141258d8bd253fff31e11e15da03e70f5577`	pdf-javascript-stream	PDF /JS object 10 at offset 0x2F5	1955 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0011_002.js` `23163343e0372409aa9b9a12d2e098bbeca255cf6f305c2bf1707506326d2c96`	pdf-javascript-stream	PDF /JS object 11 at offset 0xAD0	150 bytes

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