PDF malware analysis — malicious · 2d11697e8e3c04e5

MALICIOUS

PDF

4.3 KB

MD5: 46f703f28ca46c3a5740d422c5e105a3 SHA-1: 8da8201c042d74c48a52a51776beb93255282116 SHA-256: 2d11697e8e3c04e5d8bddc84750b41f7a078a61db14eafc73766fdc4490486d5

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript stream utilizes eval() and String.fromCharCode, suggesting obfuscation and dynamic code execution. While the exact payload is not discernible due to obfuscation, the presence of these techniques strongly implies an attempt to download and execute a second-stage payload. The file is classified as malicious with a high risk score.

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_obj760412_000.js` `5d2dbf9dc1b187e2b105a1947b34f0f3077331e195f655c33d625bafa731d832`	pdf-javascript-stream	PDF /JS object 760412 at offset 0x13A	8295 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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