PDF malware analysis — malicious · b987dcf073607863

MALICIOUS

PDF

1.4 KB

MD5: d8c70a7eb79106c1b2689df98e507d70 SHA-1: 862fc262de6b8e101588a457e12b1a08c9ce2e13 SHA-256: b987dcf073607863e02d44816454ee8c42fae63d919518ec00ac4d11a5317815

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to the media.newPlayer object. The JavaScript is obfuscated, but the presence of unescape() calls and the critical heuristic firing indicate malicious intent. The primary goal appears to be the execution of arbitrary code via this 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` `4c33ec1fa87d0de02ef49e0753001e7725f3621984663213c558e22f0c328eb0`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1260 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` `00ba7163bf74ed4262d8c3c9f8ec3b9d1e57727dfb8dcdbba3baef795bd64725`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x485	262 bytes

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