PDF malware analysis — malicious · 529aa1e52afde725

MALICIOUS

PDF

5.7 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: 8528e4147ce50cbb7117a4062d2a7ef1 SHA-1: fe16df43a2e0e9e5db3fd588bccb103611aee7c4 SHA-256: 529aa1e52afde7259024ac0dcc493e14d8d4aafcd5760dfef2fba7aba2b4e492

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

This PDF file exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) by leveraging embedded JavaScript. The heuristics indicate that the PDF launcher concatenates and evaluates JavaScript derived from metadata fields. The deobfuscated JavaScript files suggest the execution of further stages, likely involving downloading and executing additional malicious content. The file is classified as malicious due to these exploit attempts.

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. (identified after JavaScript deobfuscation)
Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `cdce5884574192d638f31d0bbf90ea5e143f45a5df385b170c024c9488a084dc`	pdf-javascript-stream	PDF /JS object 32 at offset 0x2D2	254 bytes
`javascript_obj0034_001.js` `b6fc1f4c3c62488a4c3f65745268ad0bb974180875bbfe44fc9529f62dff6582`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3BF	280 bytes
`javascript_obj0036_002.js` `a1ed7c24ea475bf41d50fdad6aebef3d30dfca165604674353d8985399a83978`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	149 bytes
`legacy_pdfkit_stage_000.js` `67724eb2b93007e15fb448b3359ef733b0618000641cf50c04603b471556271b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x528	1806 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `5684e0ffbf6b42e89a7646e6c126240e0590394057a2eabbdbf25c3eb65e98c7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xA4F	1646 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `edab9f9cea1fc4163012157ddfbe2d09395770f2d486a2bcc0d8d058c463b303`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xF9C	2950 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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