PDF malware analysis — malicious · 7bb4fe7321e73a7a

MALICIOUS

PDF

2.9 KB

MD5: 5cb489a0308a999ee9c0b975943393cf SHA-1: cd0a1cd782a3d9ef37934799989c71dd42ed80c6 SHA-256: 7bb4fe7321e73a7a1769943bdff2605a6da02cd6fe2eb04aff6af5f07b96c678

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and utilizes the unescape() function. A critical heuristic identified the CVE-2009-4324 vulnerability (media.newPlayer), indicating the script is likely designed to exploit this flaw to download and execute a second-stage payload. 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` `4fec8f590bd58b79d8d95f48ef1b3f0b820cecf16ce79ced997e20a7eb78d308`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	1929 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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