PDF / .VXE malware analysis — malicious · ac5ba2a178b9d906

MALICIOUS

PDF / .VXE

2.6 KB

MD5: 6da46e6d6e318de57c41633b7059893d SHA-1: df04fa049dc021cde401fb619c93e31b06a53545 SHA-256: ac5ba2a178b9d9061d76b93a48495c77dca2d83aaa3cea217de90e16aeaf3a1e

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, with one stream exhibiting high-confidence indicators of obfuscation and the use of eval(). This suggests the script is designed to execute arbitrary code. The presence of String.fromCharCode further supports the obfuscation technique. The script's likely intent is to download and execute a second-stage payload, though the exact mechanism is obscured. No specific malware family could be confidently identified.

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` `a85b6a680dafc8eeab6b74a3756033d082d9a9360964ccdd9473d54ec8c4a7b9`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	373 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111712_001.js` `8339334c79109b0e1c8a795bd456d7bb77f6ce60e4e8d27659624fba29b37efb`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x249	2952 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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