PDF malware analysis — malicious · 96bedeadbc394e9f

MALICIOUS

PDF

250.1 KB

MD5: 6368bbe11281ff1ba2a3465bac131594 SHA-1: 8509cbf0089e0147d11ea21b8214ffdd13a11215 SHA-256: 96bedeadbc394e9f28688d9884deeac7dd9bc7fce77eb0f984962fcc74952dde

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript that exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The deobfuscated JavaScript, identified as legacy_pdfkit_stage_000.js, is flagged by ClamAV as Js.Exploit.Shellcode-18, indicating it likely attempts to download and execute a malicious payload. The primary attack vector appears to be leveraging these PDF reader vulnerabilities to achieve code execution.

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)
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 detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_obj0008_000.js` `44a860b2562b469310a01c8e5827962a8b51bfada6a7528448eccad2a387601c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3415 bytes
`legacy_pdfkit_stage_000.js` `e604374c284212febae6f028e9ca3fb4ed1f3e76b61e586b844d3da64e3d1eab`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xF72	8394 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s).

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