PDF malware analysis — malicious · 5659b08f828214ff

MALICIOUS

PDF

15.0 KB Created: 2009-10-01 19:44:16 Authoring application: PDF Library 7.6.6 (via PDF Library 8.8.4)

MD5: 0fbed5244a7c8a809db10d25a09bca84 SHA-1: bb6bd08f29af688f45b11516db84603bf43a2bcf SHA-256: 5659b08f828214fffd8159a979f533ddb0d3893992480a75aea84cf26c707bbe

176 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

This PDF file was flagged as malicious by multiple heuristics, including a high-severity ML classifier and ClamAV detection (Pdf.Dropper.Agent-7213136-0). The presence of JavaScript actions, embedded JS streams, and an eval() call strongly suggests that the PDF is designed to execute malicious code. The extracted artifact 'javascript_obj0007_000.js' is likely responsible for downloading and executing a second-stage payload, a common dropper behavior.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

ClamAV: Pdf.Dropper.Agent-7213136-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7213136-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_obj0007_000.js` `8191fc4d145bd63190896a44f78ded91134ef18cb39b013f9eb4afe69d69fd94`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	159202 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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