PDF / .TMP malware analysis — malicious · ea615f2fbb64c41e

MALICIOUS

PDF / .TMP

1.95 MB

MD5: 8fef9d9c2d3900bf1fc1ed3164a365eb SHA-1: 6aeadb69a4fecc286c237ada5bb368c619ba908c SHA-256: ea615f2fbb64c41e74914bf2a608f98fd8f1ce4e24f0cb5023a9f6567f46a385

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF document contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical finding, POLYGLOT_CHILD_PDF_STATIC_TRIAGE, points to a secondary embedded PDF with suspicious static findings. The CVE_2009_4324 heuristic specifically identifies the use of media.newPlayer via annotation APIs, a known exploit technique. The deobfuscated JavaScript files suggest the execution of malicious code, likely to download and execute a second-stage payload.

Heuristics 5

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.
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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `decfdd30abb558202fba14bb7e29e6fa5b96ed31efca96d4b7e726616f722b2c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3415 bytes
`javascript_obj0008_000_1.js` `e79336c03430ced50628d533330ab892e1c0a7bd1c2c1751d5bb3b7f9bdf9af8`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3583 bytes
`legacy_pdfkit_stage_000.js` `a2f7c6291810a92401175598091c19a8a02dd8a04806b9c018726297b495b17b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x101A	2552 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `42025b552c7960b53abcd8cd732b01c8d109eccfdfefc352b9826c4d5807d414`	deobfuscated-js	cross-stage annotation API aliases at offset 0x1E7	81 bytes
`polyglot_child_pdf_off00022723.pdf` `9d50ea655f31544d54da77d7b8efcfdb8016b958039ce4458e00648b26811878`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x22723	1906909 bytes

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