PDF malware analysis — malicious · 242cba7f5461a1a7

MALICIOUS

PDF

8.9 KB Created: 2009-11-16 19:42:29 Authoring application: PDF Library 1.9.8 (via PDF Library 5.7.10)

MD5: 3091197f7d3d90957d226f027646afc9 SHA-1: 1bcd159c7675eb3bc791202ba27c3b3c483afb14 SHA-256: 242cba7f5461a1a78ef24b3b7f48b52702b3acf5ce569db3827ced201c8db2bb

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious Link

This PDF document exploits multiple Adobe Acrobat vulnerabilities, specifically CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992, through embedded JavaScript. The exploit leverages obfuscated JavaScript, identified as 'legacy_pdfkit_stage_000.js', to achieve its malicious objective. The primary attack vector appears to be the exploitation of these known PDF reader flaws.

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` `5a4f352d9041a6a51a50d394097f1dc6d1a28cef119adc4abbdad393d30a998e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	38146 bytes
`legacy_pdfkit_stage_000.js` `08d3a31dfc4722745d179517fdbd6c4db83dd209f69b81299658791a35f452a9`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x268	9868 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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