PDF malware analysis — malicious · ef9c49e0df5a0c1e

MALICIOUS

PDF

118.6 KB

MD5: 5bed1bf2559d7c6bfe6ea11a76273093 SHA-1: eb29ad5f530f10fe3c33f50e2336233855daa6f3 SHA-256: ef9c49e0df5a0c1e5a4c4550a163f62a0484349413e56d786693b144f39f396b

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains multiple high-severity heuristic firings related to JavaScript execution, including `eval()` calls and a large comment-padded JavaScript eval stager. ClamAV also detected it as `Pdf.Exploit.Agent-36086`. The embedded JavaScript stream, `javascript_obj0006_000.js`, is heavily obfuscated but the presence of `eval()` and `fromCharCode` suggests it is attempting to decode and execute malicious code, likely to download and run a second-stage payload.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Large comment-padded JavaScript eval stager high PDF_JS_LARGE_COMMENT_PADDED_EVAL

PDF JavaScript contains a very large stream padded with long random-looking block comments around String.fromCharCode and eval. This is an exploit-kit obfuscation shape used to bury a decoder and recovered stage inside noise, not normal PDF form automation.
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_obj0006_000.js` `c9250332235629695fa0594e9da0bbd31222e4b649ba7b8148d59fae331bedea`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	626617 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 42 long base64-like blob(s).

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