PDF malware analysis — malicious · 6c6eee3caa95d34f

MALICIOUS

PDF

3.2 KB

MD5: 3638e73c75c9f9476b5ad09abe4e9446 SHA-1: 293682cd0a0bfdb347b3f58bb27bf80b420245a8 SHA-256: 6c6eee3caa95d34fa05ba841c4df4d0ec9b6b93186a44d9ef94ce776e84734a8

206 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical PDF_JS_EXPLOIT_CLUSTER and PDF_UNESCAPE heuristics, along with ClamAV detection as Pdf.Exploit.Agent-36121, indicate a PDF exploit. The embedded JavaScript attempts to decode and execute content, strongly suggesting it's a downloader for a second-stage payload. The ML classifier also flagged the PDF as malicious with high confidence.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `86eea404a90f2c86c20864cee97ff5ecef25552480dec17b96cb002e8b6015cc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C9	457 bytes
`stream_000_off00000152.bin` `a3020497754e807f2bfd641e053149a63932d6467eee70365c69b53dc73ff069`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x152	11762 bytes

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