Pdf.Dropper.Agent-5358316-0 PDF malware analysis — malicious · d70b385fa515cc95

MALICIOUS

PDF

308.6 KB Created: 2009-12-21 16:55:35 +08:00 Authoring application: Acrobat PDFMaker 7.0ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿcer(Acrobat Distiller 7.0 (Windows) (via Acrobat Distiller 7.0 (Windows))

MD5: ea808984bf9962b755c158d47960c631 SHA-1: 933d40759346832910c9c3ff84224972d90529ec SHA-256: d70b385fa515cc951e5281e4eb6791951f80576a0a030ab8be12e12ddd294060

238 Risk Score

Malware Insights

Pdf.Dropper.Agent-5358316-0 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file exploits CVE-2009-4324 using embedded JavaScript. The primary PDF contains a secondary embedded PDF which exhibits suspicious static findings, including JavaScript actions and unescape calls. The ClamAV detection name 'Pdf.Dropper.Agent-5358316-0' indicates its function as a dropper. The embedded JavaScript likely facilitates the download and execution of further malicious content.

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. (matched in decompressed stream)
Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
ClamAV: Pdf.Dropper.Agent-5358316-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-5358316-0
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/pdfx/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/photoshop/1.0/

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0043_000.js` `8ce3a6480802617f09d669334e59524b35c689eab2505bd49c8e62d8a215ee84`	pdf-javascript-stream	PDF /JS object 43 at offset 0x2430	2172 bytes
`stream_009_off0004b716.js` `72a7a81874bc825243697fb1380a9dc969da68bf826f90ff5241fdd360dd07a9`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B716	6463 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 20 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0043_000_1.js` `ca2fd006a36b1a8b13870873fa5709a4707a8a167d66ee7a20c04b335b1fa33e`	pdf-javascript-stream	PDF /JS object 43 at offset 0x2430	2116 bytes
`polyglot_child_pdf_off000492b1.pdf` `9a92832b0e44cdf69122ca7d3818540f162a8455d855283afdd8545ffda376c3`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x492B1	16302 bytes

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