PDF malware analysis — malicious · 8bec81afc2bdcad2

MALICIOUS

PDF

4.5 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: 261c17b2858d510209fdd701b4a7b677 SHA-1: 9fa5c532e5f19443258a99b5feaab0e663fa6634 SHA-256: 8bec81afc2bdcad23f7c9dba6012a57b00f0bacaf27945fef66c0c9777e4f967

200 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: JavaScript T1059.003 Command and Scripting Interpreter: Windows Command Shell

This PDF file exploits multiple known vulnerabilities including CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These exploits are designed to execute embedded JavaScript, which is present in several streams within the PDF. The deobfuscated JavaScript indicates an attempt to download and execute a second-stage payload. The specific vulnerabilities targeted suggest a PDF-based exploit kit.

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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `b75411b36518ebfe8d9456193e2089714aa0ab0c78d0b744dda858ba631ab30f`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC2A	192 bytes
`javascript_obj0016_001.js` `7337f519654e2b67b040c80120e40d707b08bae88ca0e7d2cab62a42465eec36`	pdf-javascript-stream	PDF /JS object 16 at offset 0xD0B	511 bytes
`javascript_obj0026_002.js` `c35932e6841f735865515a1649c8eba956af70e4c35d951f26f01dafd2b72e7e`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE9B	147 bytes
`legacy_pdfkit_stage_000.js` `dbc8ad90611d1526d3aca776d7afaeaa60622fb3a47e8d7a7094a3cf9317f49f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1E7	6376 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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