PDF malware analysis — malicious · 4a62f65f84b0caa3

MALICIOUS

PDF

16.3 KB Authoring application: sli

MD5: 661ad1b7f3eeffdebe09ed5f7d86ec1a SHA-1: 94f84c175fdf383d488f8a79ff08a1d69110044f SHA-256: 4a62f65f84b0caa3cf3fcae96236889080bfd60792baa9b9d9794e13cc7017dc

356 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 PowerShell

This PDF file contains embedded JavaScript that exploits multiple known Adobe Reader vulnerabilities including CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The deobfuscated JavaScript, named 'array_char_table_stage_000.js', is responsible for triggering these exploits. The primary goal appears to be arbitrary code execution, likely to download and run a secondary payload.

Heuristics 8

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)
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)
ClamAV: Pdf.Exploit.Dropped-91 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-91
Suspicious extracted artifact high 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `f18778a11dda8a71d5562b36386c4a1a17e2b90636b4616cbfe1072c83df5b71`	pdf-javascript-stream	PDF /JS object 76 at offset 0x401	15436 bytes
`array_char_table_stage_000.js` `9ac6a661a745c2ad1a3ac118b6b7308e61344b5800cfed4395830e20c1c2aeb4`	deobfuscated-js	array character-table decoded JavaScript at offset 0x42D	3884 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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