PDF malware analysis — malicious · f8c8f66b1e9f6fdd

MALICIOUS

PDF

5.1 KB

MD5: 00df7cdfbf5ab6c5ee8cbf0d690c5ddb SHA-1: c99df19f435724251c297f12c205f3e11bd158cb SHA-256: f8c8f66b1e9f6fddc09c60b3da1d61a3ef63c232602ff2ce3f62dda84ab9acf2

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file 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 likely executes arbitrary code. The extracted artifact 'javascript_obj1460_000.js' is a strong indicator of malicious JavaScript execution. The overall pattern suggests a downloader or dropper mechanism, where the PDF serves as a container for the malicious script.

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_obj1460_000.js` `221b38c8ab94ca87fd055ef2566940fbd136b210ca5122ed79fe51e69f3300ff`	pdf-javascript-stream	PDF /JS object 1460 at offset 0x137	8360 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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