PDF malware analysis — malicious · e88b0556c1ede5d0

MALICIOUS

PDF

4.0 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 80ceb566d611f8ea9356391e1d31f360 SHA-1: 9fc2ecff979033f66c78dfba4db9925f3fb2dcba SHA-256: e88b0556c1ede5d0d18082b51fd564aabedcea2ba33c1d0b4f4483ad2b9338ad

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains embedded JavaScript that is triggered by the OpenAction. The critical CVE-2009-4324 heuristic indicates the use of the media.newPlayer exploit, which is commonly used to execute arbitrary code. The JavaScript itself appears obfuscated, but the presence of the exploit and the JavaScript action strongly suggest an attempt to compromise the user's system upon opening the document. No specific malware family could be identified.

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.
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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_obj0013_001.js` `bfa105c91b2810544583c606833f0d6f6f03763e0cd8734eb9daa59dff5ffa18`	pdf-javascript-stream	PDF /JS object 13 at offset 0x393	2603 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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