PDF malware analysis — malicious · 5462346bca010edd

MALICIOUS

PDF

5.7 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)

MD5: ea6827794294db45c1f4199c994023cd SHA-1: bbb3dcc320a34df43c177af3750f85190c1bf96a SHA-256: 5462346bca010edd6e5508b1000c96fe9490cdd716a7fef634cb611253ad57f2

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The sample is a PDF file that leverages known vulnerabilities (CVE-2009-0927 and CVE-2007-5659) to execute embedded JavaScript. The JavaScript is obfuscated and uses eval() calls, indicating an attempt to hide malicious code. The presence of extracted JavaScript files and the ClamAV detection strongly suggest this PDF is a malicious dropper designed to download and execute further stages. The specific exploit targets and the nature of the embedded scripts point towards a downloader or exploit kit delivery mechanism.

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)
ClamAV: Pdf.Exploit.Agent-35931 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35931
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `cd4bf580ffda8e4871465a009bb5e5e33469f39d8de2323bcc100dd2328f280d`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1350	777 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `f9c3662b518a49bfc26d492c049f224402898fad05a46c4f5c361864903593ed`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x16E	4931 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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