PDF malware analysis — malicious · f58055055ef4ae8f

MALICIOUS

PDF

1.2 KB

MD5: 3ae452d8db608727c0fcd9d1f0a0b58f SHA-1: e769bff5ffbcc3a05b1639b1598c29c10bac609e SHA-256: f58055055ef4ae8f6560bb066f56e45ff05e6c41508bffd0669a15423b130472

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic specifically flags the use of media.newPlayer, a known vulnerability in older PDF readers. The embedded JavaScript, though partially obfuscated, likely leverages this vulnerability to execute malicious code. The unescape() call further suggests obfuscation techniques common in exploit delivery. The primary function of the script appears to be exploiting this vulnerability to download and execute a second-stage payload.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `7e3242c86a6d1e3d4dd3494839f099570fdb2a3f8272211f7e39e4996af1bf60`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	675 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0005_001.js` `1f84b51c57cd17f03ca4e813ac9da37262f2b978467f186b0e4df17364a332e1`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	36 bytes

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