PDF malware analysis — malicious · 38102710cd7e1fdb

MALICIOUS

PDF

1.4 KB

MD5: bb911162b905dbfedc7d815e586a4c20 SHA-1: 5f7bcb720815ae29153fe6e39df12ce0db236040 SHA-256: 38102710cd7e1fdbea050f13a8e496f7e888bb8257a27878a2c54ce788b94d7c

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

This PDF file exhibits multiple critical heuristic firings, including CVE-2009-4324 and a ClamAV detection for Pdf.Dropper.Agent-7249589-0. The presence of embedded JavaScript, specifically utilizing unescape() and targeting the media.newPlayer object, strongly suggests an attempt to exploit this vulnerability. The embedded JavaScript streams are likely responsible for downloading and executing a secondary malicious payload, a common dropper behavior.

Heuristics 6

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)
ClamAV: Pdf.Dropper.Agent-7249589-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7249589-0
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` `41a4850df84ad2743550eda997d557c9e3afec9f8530461c4b992f0fd183c3fd`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1275 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` `513d2c9d54882d89a2674be7638d30dc8a66b12aa9e65f0c344c4daf74e5c660`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48A	268 bytes

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