PDF malware analysis — malicious · 760cc5c8f6d0eb3a

MALICIOUS

PDF

4.9 KB Created: 2010-03-06 10:38:12 Authoring application: zwac7ab

MD5: 1d53de8756f3eac95c12ffb65805922b SHA-1: b23942fe7f3b5b52799525a57037aa56838e13b0 SHA-256: 760cc5c8f6d0eb3af25abed2f4970dc7da183b9ed50410fa0f30bc6ddda097c7

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) to execute arbitrary code. The heuristic firings indicate that this JavaScript is designed to exploit these vulnerabilities, likely to download and execute a secondary payload, as suggested by the ClamAV detection 'Js.Exploit.Shellcode-18' on an extracted artifact. The file's metadata and structure are consistent with exploit-laden PDF documents.

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_obj0028_000.js` `14e656329943238d7eb6d5f5fa167f8781cf475158ac56ce8bdb63c0f4e8b4f4`	pdf-javascript-stream	PDF /JS object 28 at offset 0xFF0	324 bytes
`legacy_pdfkit_stage_000.js` `f2a0849a908a579641a363b972f6b1fd7e175d71b09c25e65ac729167638b2c7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1EC	7219 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 16 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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