PDF malware analysis — malicious · 4abe17763e527677

MALICIOUS

PDF

8.0 KB

MD5: 32c6378d28f908d3e7de4e824cf1b54b SHA-1: 2d362a6fadd95c7ff289268ce4325d828b48b71c SHA-256: 4abe17763e527677614d0148463c2e1c749de8a5a2533bf835dc9265f92fb009

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically targeting PDF reader vulnerabilities (Pdf.Exploit.Agent-36063). The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for initial compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36063 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36063
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `eb39e2de4dbbc100de6d3e30aa43ff78fa075618862ba1ebba5151ea3a3b848d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1D2	273 bytes
`deobfuscated.js` `15ca007848a804d7ba8be5e808515fc2c58f73cc300a3d868a60cbcb94e084b7`	deobfuscated-js	PDF JavaScript deobfuscation pass	30701 bytes

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