PDF malware analysis — malicious · ce8f165c7cc3e57c

MALICIOUS

PDF

16.9 KB Created: 2010-01-01 07:27:45 Authoring application: Fexaxououazobb

MD5: 0db6a78d4718ad931274cabe194e1d7d SHA-1: aa717a2c53406d4cb2a2ad32f90c1fcf6b220dd4 SHA-256: ce8f165c7cc3e57c419830d7a58e31630d1533eb8c182604d7b99ed5ebd4a931

258 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are used to execute embedded JavaScript. An extracted artifact, legacy_pdfkit_stage_000.js, was detected by ClamAV as Js.Exploit.Shellcode-18, confirming the malicious nature of the script. The script likely downloads and executes a second-stage payload.

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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `3b988a374a44086555116a1db3a15e7e0334929f06769b0967f059673c1c6bec`	pdf-javascript-stream	PDF /JS object 12 at offset 0x4E6	1272 bytes
`javascript_obj0028_001.js` `afb939ce6304ee606e6950e1dec3df372f697de80ef489121a506f4893e5339f`	pdf-javascript-stream	PDF /JS object 28 at offset 0x1B9	1913 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` `e93971cc84e1e2417246712118e7f64e699fd4b65583e91d3d179c0195a12d9d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x7C4	29170 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 86 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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