PDF malware analysis — malicious · 49cf5d45149635ce

MALICIOUS

PDF

1.8 KB

MD5: 545c6cf45e771b31b44697c9fb39879c SHA-1: c44570d7638ea9926820fea33bb7ab4725284e5a SHA-256: 49cf5d45149635ce21f59699fdd232e7acab87c278bff53fde3d7d132f6923c5

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF and JavaScript. The JavaScript stream, identified as 'javascript_obj0005_000.js', is likely responsible for downloading and executing a second-stage payload. The use of unescape() and String.fromCharCode suggests obfuscation techniques common in malicious scripts.

Heuristics 5

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_obj0005_000.js` `2688e2151ccdd035a402eb29df5657e69474389807a3aaae0f60965e723809d4`	pdf-javascript-stream	PDF /JS object 5 at offset 0x156	4960 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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