PDF malware analysis — malicious · 2ce9e2528f592c68

MALICIOUS

PDF

6.5 KB

MD5: deaa2e39a86b3ce37e30ba0ebbd0753f SHA-1: a0322770ddacc86f79ab6685c07b47e1607a1d97 SHA-256: 2ce9e2528f592c68a1c0f5299950e17a32d907eaf683a22e2f31b4a3e68c6787

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier strongly flags this PDF as malicious. The JavaScript stream, named javascript_obj0009_000.js, likely contains obfuscated code designed to download and execute a second-stage payload. The unescape() call further suggests obfuscation of malicious content within the script.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `ed0a4f9f0e176acffb6c60d5822cea4ca598ded6b534eb75f0f937ca832ade50`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	5311 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 7 eval/decoder/string-building token(s).

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