PDF malware analysis — malicious · b3498dc401fa4dcf

MALICIOUS

PDF

4.3 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: cfdcf7d84878e3837b476f57f0411af5 SHA-1: bf347712e22e62afbc4f7692e8d218681ddde2be SHA-256: b3498dc401fa4dcf95ba0f96ec38d95cfc58f093278a9b0f6c1644cace9107c0

358 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659 through embedded JavaScript. The ClamAV detection of 'Pdf.Dropper.Agent-7294650-0' and the detection of an extracted artifact 'Js.Exploit.Shellcode-18' further confirm its malicious nature. The embedded JavaScript, particularly the 'eval()' call and the deobfuscated script 'legacy_pdfkit_stage_000.js', strongly suggests the execution of a dropper functionality designed to download and execute further malicious content.

Heuristics 9

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: Pdf.Dropper.Agent-7294650-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7294650-0
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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `a1348b03eb1e855df382d60536a195ef7fda7b2281e17eb12028e33c728ee799`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC3E	90 bytes
`javascript_obj0016_001.js` `83bb53b5ccf200598bc0659f93b7e4c55a79768bc99a6ff8bc0cb909d06eed59`	pdf-javascript-stream	PDF /JS object 16 at offset 0xCDB	411 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0026_002.js` `0ee755034a4708d03a70bef5ded387f0e1dcddfd98b5905241ae08d86a2735c0`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE37	127 bytes
`legacy_pdfkit_stage_000.js` `9eb7aefba91f09524c2ad385fe4834ea0fec3ccd69f08a1862f5660a69d3606c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6477 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).

Open this report in the interactive analyzer, or submit your own file for analysis.