PDF malware analysis — malicious · 23016ac0d1c7628e

MALICIOUS

PDF

16.5 KB Created: 2010-03-13 18:18:28 Authoring application: bVtZi (via EYbOhpthA6)

MD5: 4bfa5bbab37d24deeaa45633130bb60a SHA-1: 8dddceee2607a2bf1a3fde57ea744e071f076836 SHA-256: 23016ac0d1c7628ea0d300ddf53cdb3841b87af11082b31cda407d6481f8f373

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 high-severity PDF_EVAL firing suggests the script is obfuscated and uses eval() to execute its content. The extracted artifact 'javascript_obj0007_000.js' further confirms the presence of JavaScript. The likely intent is to download and execute a second-stage payload, though the specific URL or execution method is not directly discernible from the provided evidence.

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.
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` `4eff93900c139527f64e76be58aa7ee5e50639c4968e04a9c90d9581f07c6e8a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x242	15628 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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