PDF malware analysis — malicious · b3054feac7d3052d

MALICIOUS

PDF

2.7 KB

MD5: 3026894cb42c036602e18674be0121b6 SHA-1: 6473577945250b08803d0d9733471e6963f05805 SHA-256: b3054feac7d3052d3df6aa8baaa2d8df7d4acc29b18c8a7f96d618cc9ee50cba

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 presence of eval() and String.fromCharCode() suggests obfuscated JavaScript code designed to execute arbitrary commands. This script likely downloads and executes a second-stage payload. The lack of readable document body text and the reliance on obfuscated scripts prevent a more specific family attribution.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `2d0e1efdfa6110385aac29417e1a9d65e8e7ccab9271cd5a5863752fe736691a`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	372 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111712_001.js` `4ffea3c7fc92792d64cf6ba955147224d78936835ba9388c6e4f1d8a76bff7b3`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x248	2958 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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