PDF malware analysis — malicious · ac16e6d629c91867

MALICIOUS

PDF

4.0 KB

MD5: 65238ea7df68faec9209d69ddfeb1995 SHA-1: b6edf735f4c50df7f6bd66ab83343d10cd16a02c SHA-256: ac16e6d629c918678cb8799659791cd1f33311c82d1ff1cd35dbf725850bcff1

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript streams, with one stream exhibiting obfuscation and the use of eval() and String.fromCharCode(). This indicates the script is designed to execute arbitrary code, likely to download and run a second-stage payload. The presence of two JavaScript objects suggests a multi-stage approach to the attack. Due to the obfuscation, the exact execution flow and final payload could not be determined with higher confidence.

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` `8c4035bff035befc47bcbda661a6c8a2ee301a0b02a26bb147753a09ae48b709`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x197	258 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111612_001.js` `414de62f24dd1bfd36b312ec5fc150e2a4d403e3cd0755e9ba9086a1eacdee25`	pdf-javascript-stream	PDF /JS object 111612 at offset 0x268	5611 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.