PDF malware analysis — malicious · be140b03bbd04db8

MALICIOUS

PDF

1.4 KB

MD5: 5c9856d7b93508b0973e68874554e221 SHA-1: b4aa3e3932fb838013b714dda4cc0920d5f76664 SHA-256: be140b03bbd04db8054c7f3662e1fa16c18d5fc34990cd9b72eca855238e7b4c

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media player handling. The JavaScript is obfuscated, but the presence of the unescape function and the specific exploit signature indicate malicious intent. The primary goal appears to be the execution of arbitrary code via the exploit.

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` `33c4fa2da5686d1cbe4a64d476e6f325efbb3a88d1dcf62890d97c01bfd178f3`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1268 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` `7883eb081f3f3eeb07f338b22fe19e8af6aa29b6edadf45327bfadbf9dd17bba`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48B	267 bytes

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