PDF malware analysis — malicious · eebe56db5402268d

MALICIOUS

PDF

3.3 KB Created: 2009-05-31 15:58:06 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 13880b2c53f87b516bd44a5484d77299 SHA-1: 1f897cca0b7e83ef1b30d7b434e5caab78c51fc4 SHA-256: eebe56db5402268d2a6d79f9c69248a0e1aba698cd0c332ac0151527918a2671

96 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, including calls to eval() and String.fromCharCode(), which are commonly used to obfuscate malicious code. The ML classifier strongly flagged this PDF as malicious. The presence of these JavaScript functions suggests the script is designed to download and execute a second-stage payload, a common technique for initial access.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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_obj0013_000.js` `cdbd6ae78eb0bed58f3ffb3ce03d54c90acf41ac02a706bca8d3c6acae04fb91`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	5899 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `aa2e3df6798188cc384465c64d46e81f2bd60c8a00a94563ff3799c304904c35`	deobfuscated-js	PDF JavaScript deobfuscation pass	13188 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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