PDF malware analysis — malicious · 1c77b41710ec9f5a

MALICIOUS

PDF

2.6 KB

MD5: 073073e264283095846cb8cd23f289e9 SHA-1: aee62cca2f4a519cda20a8620f17dd3131841534 SHA-256: 1c77b41710ec9f5a67c7b1ad8a4be346b552408d391c9481225207fec4729120

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 points to a known vulnerability related to media player handling in PDF files. The embedded JavaScript uses unescape() and appears to be obfuscated, suggesting it's designed to download and execute a second-stage payload. The presence of these indicators strongly suggests 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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `3cd1d398f77b6fe3f1d6c1d12476327ecda767e68c7264982fb1b6fdb3db692c`	pdf-javascript-stream	PDF /JS object 7 at offset 0x3A2	1437 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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