PDF malware analysis — malicious · 9df149c77b95b039

MALICIOUS

PDF

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

MD5: 2f91e6186c189f83fd340949bd5ea2ea SHA-1: 17ce963df494c392a545438eb28acca50811c6fb SHA-256: 9df149c77b95b039344aa0c723c415b8c5b88d66e72bc56a593a93d6d8e289e5

200 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged through embedded JavaScript, which is further processed by a PDF launcher. The deobfuscated JavaScript, named 'legacy_pdfkit_stage_000.js', is extensive and suggests the execution of a second-stage payload. The exact nature of the payload is not fully discernible due to obfuscation, but the exploitation of these specific CVEs points to a malicious intent to compromise the user's system.

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` `daa8624ada451e4d8acb6edc2cbae2ec46e3ec10a0caddd3d5402fc964e8bf7f`	pdf-javascript-stream	PDF /JS object 6 at offset 0xD80	205 bytes
`javascript_obj0016_001.js` `a013c301f8f4171f23af496f98a43b217d4cb47e4e17b47eda4be21c5977b13a`	pdf-javascript-stream	PDF /JS object 16 at offset 0xE57	159 bytes
`javascript_obj0026_002.js` `f330153aafe681bc9733b4d8637c1a83ebd1d1e1dc01a1f57d39bb691a8df774`	pdf-javascript-stream	PDF /JS object 26 at offset 0xF23	67 bytes
`legacy_pdfkit_stage_000.js` `b610a2896238fb3df304585c994853ef977d87c2ffe3fc9def66256b478425c4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6129 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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