PDF malware analysis — malicious · f6f797c0c508e3c1

MALICIOUS

PDF

67.3 KB Created: 2010-03-16 21:18:41 Authoring application: Dim9549AQfpDF (via XNWhiQeg)

MD5: dd902799a8984027ac86305b94b18860 SHA-1: 2b0efc09882a50d7f12e69790fa91c3e6676eb27 SHA-256: f6f797c0c508e3c14b92151f8508dc5557a8684b10cecc5ebaeaa85e377a4496

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE suggests obfuscated JavaScript code designed to be executed. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically targeting PDF vulnerabilities. The extracted artifact 'javascript_obj0007_000.js' is likely the payload, and the ClamAV signature 'Pdf.Exploit.Agent-17522' further confirms its malicious nature, likely involving exploit execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 6

ClamAV: Pdf.Exploit.Agent-17522 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-17522
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
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.
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` `9e9c257018dc9a71c88440a3a110c6d09c39ac3a227e94e026d979a6ba821ff1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x240	67702 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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