PDF malware analysis — malicious · 53a413440164d585

MALICIOUS

PDF

1.5 KB

MD5: b4df9ff5d8bda8f1147ca12e58dea70b SHA-1: 0d20984290f080d185db54936df47b730ee85e10 SHA-256: 53a413440164d58583ecbee6b4bdded5b18a8712ac55b047c5be5c95f3a51d0f

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by ClamAV as Pdf.Dropper.Agent-5343078-0 and a machine learning classifier. Static analysis revealed embedded JavaScript, including a call to unescape(), which is commonly used to deobfuscate malicious code. This script likely downloads and executes a second-stage payload, a typical dropper behavior.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-5343078-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-5343078-0
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `86337aedb15a1ff0a56ae9689d96a30cdb342693e5fe9bd8ddceeca2e2b308e3`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	2202 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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