PDF malware analysis — malicious · a30f0fc4e70433ac

MALICIOUS

PDF

85.3 KB Authoring application: Solid Converter PDF

MD5: 20a2901259fa3829710f2692b4f96c33 SHA-1: 6198b23a93d6ce3580f74c7b9c6334864dac0d7d SHA-256: a30f0fc4e70433aca0dc7ce7fb64c718143b7c40f4be7220e180159afe1ce358

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF sample contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability, specifically targeting the media.newPlayer API. This exploit is designed to download and execute a secondary payload. The presence of a polyglot child PDF further suggests a multi-stage attack. No specific family could be identified, but the exploit and delivery mechanism are clear.

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. (matched inside decoded stream)
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. (matched inside decoded stream)
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000063a.js` `447cccb0b28690cfd35e6c7d285b83d1ca96a54fd0f2a437498ab8c6a303cc5d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x63A	2610 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 hex-escaped blob(s).
`legacy_pdfkit_stage_000.js` `42c3f4df375ff6f58ff655cc4f88b5cc28f0dd33b978390db3538684a6219b74`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x63A	126 bytes
`objstm_0023_00.bin` `e8bfe65c34a535b0837ce7c541e45b42ab61e1ff13de05788daf7770f9a1ec0e`	pdf-objstm-decoded	PDF /ObjStm 23 0 obj (inflated)	274 bytes
`font_00_sfnt_off0001080a.bin` `aa04ff779405cdf155a2261c4808ac00ed0ad48c86fcb28b9cac7f6a4234b110`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1080A	3763 bytes
`polyglot_child_pdf_off00009fd3.pdf` `8f611a4ea7f0a790f7ec605de81c614ecd2793565b4911ebebf667c035c09a7b`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x9FD3	46432 bytes
`polyglot_child_pdf_off00013d46.pdf` `0b1c923c8a0028794f3a3244dc498786746334f394e41678cc58ffbeb707d0a8`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x13D46	6125 bytes

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