PDF malware analysis — malicious · 28d7487344adb79e

MALICIOUS

PDF

92.2 KB

MD5: 729b73b48d655036840c3f7132867709 SHA-1: e04cdc33b55ded189683dcff807aca023630f19c SHA-256: 28d7487344adb79ed418649593ad6da367f62d1c248f5bbd59e1decdf8ccd862

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting an exploit is present. The deobfuscated JavaScript, named legacy_pdfkit_stage_000.js, appears to be designed to download and execute a second-stage payload, as evidenced by its structure and obfuscation indicators. The reconstructed string "http://hax.ha/" is a strong indicator of a malicious URL used for payload delivery.

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` `926a9b8c4e3b4fa1718f3924117448cbe45c301abb6ab822d2a84d187ce37e6c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2578 bytes
`legacy_pdfkit_stage_000.js` `fbac795adc7cea718b8ae4b1ca8e9752f7cbfedaf4162134e8d0fb8d72150ac6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xC2D	2528 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.