PDF / .RAW malware analysis — malicious · 2c3ef986277ab567

MALICIOUS

PDF / .RAW

6.2 KB Created: 2008-06-14 19:47:42 Authoring application: Devill (via Blackpad)

MD5: 6501d3d9ba37acf36095d75ea37ff348 SHA-1: 7b7ff40754042319f74518c77d620ee33f2f4aab SHA-256: 2c3ef986277ab567360b45e4da1245dee0a3204b3084178700eba6c567c51dc1

266 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: JavaScript T1204 Malicious Link

The PDF file contains embedded JavaScript that exploits CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. The JavaScript is obfuscated using String.fromCharCode and is detected by ClamAV as Js.Exploit.Shellcode-18. The primary function of the script appears to be downloading and executing a second-stage payload, indicated by the heuristic firings and the extracted JavaScript artifact.

Heuristics 8

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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_obj0006_000.js` `6ac7dbfc8c983738d1ccbdc9556887c9a8c40c0259fd3606aa30d8de981d6e72`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1214	1842 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `3dd569e196df678fe34ee0b7e78eb4d84301a5162a3bee511cc1d9e016faf3da`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x18E	11437 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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