PDF malware analysis — malicious · 019357f6e387eeb4

MALICIOUS

PDF

3.2 KB

MD5: 2dd6bd00486cc2cb94f708c82ff1e573 SHA-1: ee6c6095ea8bce8fd4d00ff08f38e22dc7020e9c SHA-256: 019357f6e387eeb4ccf6c418e013c54d1dad5526baf9c1e3a5c2c6aa267f0d6e

206 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape function, a common technique in PDF exploits. The script appears to decode and execute a string derived from the document's title, which is likely a malicious command or URL. This behavior is strongly indicative of a downloader or exploit delivery mechanism.

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` `299aa93d3748e2558d63723894abee30092ac2181363cc1859bd200a100645a2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C7	497 bytes

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