PDF malware analysis — malicious · db3cc4ba3d93c449

MALICIOUS

PDF

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

MD5: 334b9bba90731187535b56af24c5bdda SHA-1: bf782c5289032ce06fc81cba8e5300efa6e245e1 SHA-256: db3cc4ba3d93c449414eb5bbb6dcb302e6bf443b6ba6a524054d90ba9125307c

198 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: JavaScript

This PDF file exploits three critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) by embedding and executing obfuscated JavaScript. The embedded JavaScript streams, when deobfuscated, indicate the execution of malicious code. The primary intent appears to be leveraging these exploits to download and execute further stages, typical of a PDF-based exploit kit delivery mechanism.

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` `dd7124315ac7469689bb99d9fd5cfbf5cfd2430737db2e26bd478871a8d158fa`	pdf-javascript-stream	PDF /JS object 32 at offset 0x35E	276 bytes
`javascript_obj0034_001.js` `8f0e53991f58347e8b644a3fcc48e8eea13a8af0e33a8e6b840e6541ab5482f8`	pdf-javascript-stream	PDF /JS object 34 at offset 0x45B	395 bytes
`javascript_obj0036_002.js` `597eb160e85f5a0130e1f0cd17f82076dd290a87e78232babab1c1301679ac2f`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	266 bytes
`legacy_pdfkit_stage_000.js` `1a4d3e11f4b4e9c43e765782c2f15d50966982937a9e006ced3599c49d8a7609`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5A8	1646 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` `3d7fa66ff633bba80853e5031ddaa1e782a19bd465391af4c86cfb9db89c89b3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB43	1812 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` `6790ba8f0c3412704f388556a1321feea2f1fb60aeeb544a3843a049cd662024`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x10C4	2962 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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