PDF malware analysis — malicious · bff670a28b8823e4

MALICIOUS

PDF

79.1 KB

MD5: 5aee81da008523aa4d02b206abd567e9 SHA-1: b34adb9b99edc85c3cc5c140498fb77ac7e60813 SHA-256: bff670a28b8823e4796681a53ad8e25ca200ce8c0e982c2ebd7fdd1169e76c53

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF file contains embedded JavaScript and triggers a known vulnerability (CVE-2009-4324) related to media player annotations. The deobfuscated JavaScript, named legacy_pdfkit_stage_000.js, indicates a malicious intent to execute code. This suggests the document is designed to exploit this vulnerability to download and execute a secondary payload, characteristic of a downloader or initial access stage.

Heuristics 4

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)
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `b1417c7fb627e97e1f7f6cf46ff077419a6c6b466fcea576e5ac7274f3fac2f1`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3583 bytes
`legacy_pdfkit_stage_000.js` `a7fa1c7f9ffbf25e72b91cc136a99fc166e3177ff7fd64564cbc7fb60277fd64`	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

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