PDF malware analysis — malicious · 9283b313141b6208

MALICIOUS

PDF

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

MD5: bf9428c9c98158a397df90567e9b0d69 SHA-1: bfa8767535af99f2029abaf4e7819ce8e6798e68 SHA-256: 9283b313141b6208affb57ab75591ebf3ccc216c334e1547baed0187d28328e6

338 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The sample is a PDF file that leverages multiple critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) by executing embedded and obfuscated JavaScript. The JavaScript utilizes `eval()` and `unescape()` functions, indicating an attempt to download and execute a secondary payload. The ClamAV detection of 'Pdf.Dropper.Agent-7283290-0' further supports its role as a dropper.

Heuristics 9

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)
ClamAV: Pdf.Dropper.Agent-7283290-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7283290-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `3de02874e3d2cae8f67ec686964fe7c0e48976cf78ea4c56a7791f1fa191c857`	pdf-javascript-stream	PDF /JS object 32 at offset 0x42A	135 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `193fef7e447eb5201f90f2b909a3c18c66125f48ed9229159f8754b70063c9a4`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4EB	142 bytes
`javascript_obj0036_002.js` `f2bf27292c5d297dff205e8f030ea72147200480d9eb6b7cd85f6e1e67cf842f`	pdf-javascript-stream	PDF /JS object 36 at offset 0x10B	163 bytes
`javascript_obj0038_003.js` `fc1ac9efc2b2f9a0943cfa912674e2a92e9b8bdc0959be4cc7b0d2d1b6f92c0e`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC5A	182 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `87269fed2a73240000f3509ea312aeb295b55b5563de10d8e3e41695254364df`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	49 bytes
`legacy_pdfkit_stage_000.js` `7d70819b6f58467de6247cc8e1639725632bc6c05c5e42a0952918b01daa205a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5E5	1634 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` `253072b00ed641a17aaa63797cb440a8d52b556033b86f1bd1f3c066b7822240`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD98	1800 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` `ac9aa8efe1b664d2660a80955fd09c9fa321e6430858448a0169a97f99a56d57`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1403	2938 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).

Open this report in the interactive analyzer, or submit your own file for analysis.