PDF malware analysis — malicious · 5499b8ef429b0a1a

MALICIOUS

PDF

5.2 KB Created: 2008-12-03 13:57:41 UTC

MD5: 6165b5d9cc8e7aa567682751771d4943 SHA-1: 86ef918a7432819dc112a7f9b327bbd8785e1a9f SHA-256: 5499b8ef429b0a1a323eda31fc7ea819ba70e984dbd5e3fe45012b8d222cb8d5

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses dynamic code execution. The embedded JavaScript file 'javascript_obj0006_000.js' is suspicious due to script obfuscation indicators. The overall behavior points to a malicious PDF designed to execute arbitrary code, likely to download and run a second-stage payload.

Heuristics 5

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. (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_obj0006_000.js` `baa060b24587626fbabd13f99d3b5e59ee693a90c1f2d562ea37cd0ac046000b`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB4	8729 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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