PDF malware analysis — malicious · 447e5eb992d7b7fb

MALICIOUS

PDF

2.8 KB

MD5: ab207b852554c305a02a5b41f8a19a6f SHA-1: 66d801cc88d3a396594d77d2e15aeb6c60951703 SHA-256: 447e5eb992d7b7fb8ab147a9771a2d3e4a2cd9857a61b34b4eeac589908553f6

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 heuristic firing suggests that the JavaScript code is being executed using eval(), and the PDF_FROMCHARCODE heuristic points to obfuscation techniques. The presence of two embedded JavaScript files, 'javascript_obj111611_000.js' and 'javascript_obj111612_001.js', further supports the malicious nature. The script's likely intent is to download and execute a second-stage payload, which is a common technique for malware delivery.

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_obj111611_000.js` `11ecd49b1d61df91018d58fb6a8d46d8ac2cfbb5573b38f74ab45dcb394d0682`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x197	256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111612_001.js` `ae87242ad93aaa1b07b21d1439249d3d181e4ea63e56edac4efe7760767c3d79`	pdf-javascript-stream	PDF /JS object 111612 at offset 0x266	3275 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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