PDF malware analysis — malicious · c0bdd9feb3af9dd2

MALICIOUS

PDF

12.2 KB Created: 2009-11-08 19:49:88 Authoring application: PDF Library 1.3.1 (via PDF Library 9.8.5)

MD5: 249c25d81f4ae6a88d12873d404f9d49 SHA-1: 0518df405051215ce09881f7c8e0475ba6934781 SHA-256: c0bdd9feb3af9dd27569ed5bc0611c73b798a1f9ee1be1295c3206b1d7e09c54

220 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF document exploits multiple known Adobe Reader vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The exploitation is achieved through embedded JavaScript, which is heavily obfuscated and likely serves as a downloader for a second-stage payload. The presence of multiple exploit triggers suggests a multi-vector attack aimed at achieving code execution.

Heuristics 7

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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_obj0007_000.js` `facb056aec2bb3101e89f986102109cb6e78edd8773afab6a20a42e9e901aada`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	38003 bytes
`legacy_pdfkit_stage_000.js` `edc373b4b430ecd2d84a988703a63bb7066b44968a678f40c4ceb9ea99a0b0bd`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x268	9964 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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