PDF malware analysis — malicious · be8b537ec201dd24

MALICIOUS

PDF

2.6 KB

MD5: b408fc4822b5ac10907ecd15beb96c75 SHA-1: ebfaa9899aa69815ff89d66ddc616b497267f275 SHA-256: be8b537ec201dd243bbd30478b92eea42f067026cee161126427138add53c2ca

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The unescape() function and the critical CVE_2009_4324 heuristic suggest exploitation of a known vulnerability within the PDF reader. The embedded JavaScript, identified as javascript_obj0006_000.js, is likely responsible for downloading and executing a secondary payload, as is common in PDF-based exploits. The ClamAV detection further supports its malicious nature.

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `bc7dbd0c0bf10513b2f23ab4339bbcf74228d75a460dba1c5e2aefffd11ebc26`	pdf-javascript-stream	PDF /JS object 6 at offset 0x195	1683 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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