PDF malware analysis — malicious · 95f582b78dec64e2

MALICIOUS

PDF

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

MD5: 34c6126a17f2e271c308fda1e3a742ea SHA-1: 00bbc7bdd1320b0aa50782cbde1255b2ad04ff86 SHA-256: 95f582b78dec64e2745455b4bae13b3b563e7ef76ce2938ac77c3b9b5877a95e

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell T1204.002 Malicious File: User Execution

The PDF file contains embedded JavaScript that is triggered by the OpenAction feature. The critical CVE-2009-4324 heuristic indicates the use of the media.newPlayer method, a known exploit vector for arbitrary code execution. The embedded JavaScript, particularly the 'javascript_obj0013_001.js' artifact, is likely responsible for exploiting this vulnerability to achieve arbitrary code execution, potentially leading to the download of a second-stage payload.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `ff7c336aabd5d0becad23505b6dbd57706bf2f1b0dac26d28fd032a058d0bd39`	pdf-javascript-stream	PDF /JS object 1 at offset 0x16	34 bytes
`javascript_obj0013_001.js` `5abd0800917e879bb4184a1daf4d296c71f33b36b9d1f98a29308d2e1fa835dc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3A6	2642 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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