PDF malware analysis — malicious · ffc217204e99bfda

MALICIOUS

PDF

80.3 KB Created: 2010-06-29 10:14:47 +08:00 Authoring application: Acrobat 编辑器 8.0 (via Adobe Acrobat 8.0)

MD5: aab993731c82d1b739e886fef83196d5 SHA-1: 463f6abf8238acf20ef565b2301c32509fd5f868 SHA-256: ffc217204e99bfdaceb3c7bfe4fe03b8cc00004c76a3c0d489bcbaba42d79b07

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that exploits CVE-2009-4324 using the media.newPlayer API. This exploit is designed to download and execute a secondary payload. The presence of a polyglot child PDF and suspicious JavaScript streams further supports this attack pattern. The exact URL for the secondary payload could not be reconstructed due to obfuscation.

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)
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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact medium 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.
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.
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/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0021_000.js` `1a5b60189f8e9cafb9daf85efc864ef6b13b6dd07ebb5bbee6a97abe4573dce8`	pdf-javascript-stream	PDF /JS object 21 at offset 0x514	2371 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s). Carved artifact contains 1 long hex-escaped blob(s).
`legacy_pdfkit_stage_000.js` `42c3f4df375ff6f58ff655cc4f88b5cc28f0dd33b978390db3538684a6219b74`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x514	126 bytes
`font_00_sfnt_off00009680.bin` `b8a227c4b671c1647a098edc94637ea6c83f16d2ecb0a61ea1a95a8536915f74`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9680	71612 bytes
`polyglot_child_pdf_off00006506.pdf` `d44d75282fb6bb27f7786c7261e0e5f964b3fcbabf8c588ff75bfe72bed2956a`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x6506	56357 bytes
`polyglot_child_pdf_off0001293e.pdf` `0b1c923c8a0028794f3a3244dc498786746334f394e41678cc58ffbeb707d0a8`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x1293E	6125 bytes

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