PDF malware analysis — malicious · 35d508387ed31417

MALICIOUS

PDF

14.3 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 37f9774c17aabe280a2d74c7db45bc77 SHA-1: 5cd95fdf4f24da65a0b113f9d333f065c64c2576 SHA-256: 35d508387ed314179ce880c1103105551fa53a7837b9df9b71b8206d870e47b5

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by ClamAV as Pdf.Exploit.Agent-36118, indicating a known exploit. High-severity heuristics for PDF_EVAL and ML_NYX_PDF_MALICIOUS further confirm its malicious nature. The embedded JavaScript streams, particularly the use of eval() and string concatenation to construct code, suggest the sample attempts to download and execute a second-stage payload. The reconstructed string 'eval(tts dff[jio ol])' points to obfuscated JavaScript execution.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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` `f000f0bd097bb5a914d0eba13eff235aa3d61dfb2f220b707db34c7bf0093ee2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13080 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).
`javascript_obj0013_001.js` `e5be5756a84817b8cb90a971de18f9b6ed773cbec77bfa63ba8e6c9727ca855c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	13786 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 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.