PDF malware analysis — malicious · 6b1d601b05a26b12

MALICIOUS

PDF

3.2 KB

MD5: e1975b60f541b127a2bfd4809fe8d451 SHA-1: c44973cd881f09308e70704a7f37d2abfaf1be89 SHA-256: 6b1d601b05a26b12f7cf9211ca6d3f81636f582d37b0a80b3cdfa18ed412fef9

206 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that is obfuscated but appears to leverage the unescape() function, a common indicator of exploit activity. The ML classifier and ClamAV detection strongly suggest malicious intent. The JavaScript likely decodes and executes a payload, indicated by the PDF_JS_EXPLOIT_CLUSTER heuristic.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `0a9837ed9feeed2249ad9c2db3499934604f27c8c8c9653e18e7e0a8f2cb4db3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C2	440 bytes

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