PDF malware analysis — malicious · dd0c68df9c4cf3eb

MALICIOUS

PDF

5.3 KB Created: 2010-02-14 07:18:12 Authoring application: aa8447

MD5: c1868dc42acc9ca2a2f2254c5e2a86ef SHA-1: b417d1c457f5db193fa2c76f3d739b15463be9a9 SHA-256: dd0c68df9c4cf3ebf108fa838247321356613165afd0b88afbd5feb9fe22d9e0

258 Risk Score

Malware Insights

MITRE ATT&CK

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

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, which was further identified as a malicious exploit shellcode by ClamAV. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload. The file's structure and exploit vectors suggest a malicious PDF designed for exploitation.

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_obj0039_000.js` `ae2fbc95913da71f48e1526e0ca18ad1254ac4be5338ad4191a968ec2e1df3db`	pdf-javascript-stream	PDF /JS object 39 at offset 0x1B8	829 bytes
`legacy_pdfkit_stage_000.js` `aade16ec53c84fe15f219d00a7aabc6a6f2c1dc274a4cf89bfad7e8c12659dcb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x487	7612 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 13 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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