PDF malware analysis — malicious · 3910085d12cc6ad8

MALICIOUS

PDF

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

MD5: a1566dddb24e3a2da3b0a380f5efd8b4 SHA-1: da0738afc78540e836ec164dd96c11fb75fc26bc SHA-256: 3910085d12cc6ad864da90a8bae4cd9dedb52afbf4f0cc4481d21067d11eae15

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of known PDF vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659). These vulnerabilities are leveraged to execute embedded JavaScript. The embedded JavaScript is likely designed to download and execute a second-stage payload, as suggested by the presence of deobfuscated JavaScript files and the ClamAV detection signature 'Pdf.Exploit.Agent-13828'.

Heuristics 7

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.Exploit.Agent-13828 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-13828
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `8716d564d70244543e5bb66562c36560e97e9997579b1a4127ceb364e45ec401`	pdf-javascript-stream	PDF /JS object 32 at offset 0x2F9	239 bytes
`javascript_obj0034_001.js` `9d0c90560402f0f7707905174ebe1e77a69dccc43db6816b79b35960644a2ac0`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3E1	347 bytes
`javascript_obj0036_002.js` `e9ecb820418f9060e32c57262fea928a3f74065d4dfc75646aa65c060beb19b3`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	190 bytes
`legacy_pdfkit_stage_000.js` `4fae0c25b65cba154c2e01e168ad12ce7bcdd99944718cb6def2c4c37fc52842`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x513	1699 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` `f9302d77c7e5a17cd669e91522266b21e6d9d41d88fd0a5bbe27ed1ea25f0c04`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xABE	1857 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` `f75ba0b09b3373010d96183a8b96f29dcb208a41f3edb1a69b5871261b43b1a8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x104E	3063 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).

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