PDF malware analysis — malicious · dec77ffd4cac2100

MALICIOUS

PDF

1.4 KB

MD5: b7380312e539aaa7c6bddc5bf256bf84 SHA-1: 6cd640f419b8902d26da841519289a0282aa3db9 SHA-256: dec77ffd4cac21003f583434630a7a5dd14563ff34db1cdada39f4a2c95ce623

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript that is obfuscated and uses the unescape function, indicating malicious intent. The critical heuristic firing for CVE-2009-4324 (media.newPlayer) strongly suggests exploitation of this specific vulnerability. The JavaScript is likely designed 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. (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` `6ad94637b39c6ed63bcc8e1c3611c397d4dc2ec2a831a3d6e57125140856086f`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1249 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` `5d2f5ce2fdadd5c9daa814298997ecde38a7a6d12c69bc4cb80564774f11aedd`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x481	238 bytes

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