PDF malware analysis — malicious · 986d50b215d3199e

MALICIOUS

PDF

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

MD5: 58a717379393ff2c7120361ba69ee750 SHA-1: f969e154f954410708255fdabd606b9a8b355167 SHA-256: 986d50b215d3199e37dd0809955ef337fef61654a4339ff5e6b4cafb70dceeee

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

This PDF file contains multiple critical heuristic firings indicating exploitation of known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) through embedded JavaScript. The extracted JavaScript streams, particularly those labeled 'legacy_pdfkit_stage_XXX.js', suggest the execution of code designed to download and execute further stages. The file's structure and the nature of the exploits point towards a multi-stage attack leveraging PDF vulnerabilities.

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` `f284104a6c698c5c3a0871e168ee51a22048c803a62864d43ebed9b89de00806`	pdf-javascript-stream	PDF /JS object 32 at offset 0x35A	275 bytes
`javascript_obj0034_001.js` `34814ad162610a5d10565f8041c1611bc182f570d694855bb9e6cf8778bd1743`	pdf-javascript-stream	PDF /JS object 34 at offset 0x456	385 bytes
`javascript_obj0036_002.js` `1ec4419e5f1f2f2f9f157b331480b6de2fb4ecf9ff35d10eba83f10229292b10`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	260 bytes
`legacy_pdfkit_stage_000.js` `58e428137e7034683c38adcd5e62481706aed675b452db0650e5f8c4ed51d641`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5A1	1640 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` `5f585e3d073227f2aaefc706e339dcc1347cd47b1f64f7493c91277251c10f33`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB3A	1806 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` `771c5d2a9ff95552bf92388bf715f9acd0f4f8fb6dbae06452a8e11d3cff7bbe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x10B6	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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