PDF malware analysis — malicious · 3ce99dd31bca3996

MALICIOUS

PDF

4.9 KB Created: 2010-02-12 06:34:42 Authoring application: ye0d9c

MD5: 6ab52307cc1f38b44e9a159f4a6c4715 SHA-1: 09e4f0d81366f405d67bc3e896db869e4d180e88 SHA-256: 3ce99dd31bca39961c83bf59fe4e093de244b0580447393d2d7f4127f85c62eb

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities, including CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. The heuristics indicate that the PDF launcher concatenates info fields, extracts characters at a fixed stride, and evaluates the result, leading to the execution of malicious JavaScript. An extracted artifact, legacy_pdfkit_stage_000.js, was detected by ClamAV as Js.Exploit.Shellcode-18, confirming the malicious nature of the embedded script.

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 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_obj0004_000.js` `dc4dcd3d0183b53bff884caeda102cd420bf39c37fcab2f7c14fbdc0d0698fcf`	pdf-javascript-stream	PDF /JS object 4 at offset 0x1040	640 bytes
`legacy_pdfkit_stage_000.js` `982ec717ca70746ee23dda3226d0b1fbc4ae1445eb788b24b5be6b75de4aa0d1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x306	5758 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 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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