PDF malware analysis — malicious · 468b90f19148737b

MALICIOUS

PDF

5.5 KB

MD5: 37566a8a19f7475719d6b7f98a3610e5 SHA-1: b8aea500ba355eaf434eda4cdd6cde40ce74977b SHA-256: 468b90f19148737be80c423042f6e8b5241b72d697c91eded3e6f9bb96621f3e

114 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Dropper.Agent-7256467-0'. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS firings, suggests the file's primary function is to execute malicious code. The ML classifier also strongly indicated maliciousness. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for PDF-based malware.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7256467-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7256467-0
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_obj0005_000.js` `a3319192cac6d4dc4eeb6af2d736b0ffec979b23116a003bc7c23382761c32a5`	pdf-javascript-stream	PDF /JS object 5 at offset 0x148	733 bytes
`deobfuscated.js` `474d631edd6a86523afc8464301e9ab162dadae14678b8d66e0c9fcc7e2d9aa1`	deobfuscated-js	PDF JavaScript deobfuscation pass	7099 bytes

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