PDF malware analysis — malicious · a3780624445c3e92

MALICIOUS

PDF

668 B

MD5: b9c159460d8cab9f204a96ea93981754 SHA-1: 8ef6f0800fe13b54b1f8f9d37a9519a1cfa8cc06 SHA-256: a3780624445c3e923895c205dddca28437330a5593b154a76143cc688b741dc1

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, which is heavily obfuscated using eval(), unescape(), and String.fromCharCode(). This obfuscated JavaScript is designed to execute arbitrary code, a common technique for downloading and executing further malicious payloads. The heuristics indicate a high likelihood of malicious JavaScript execution within the PDF.

Heuristics 6

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111611_000.js` `545d901e48d7d496ab5a0b8272de421a5a342f136a8e8724c8b8c31f4bd3d661`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x1B9	121 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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