Malicious PDF — malware analysis report

Static analysis result for SHA-256 482ef1d095f4daa0…

MALICIOUS

PDF

10.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)
MD5: 33517465b2d967b42d9dba57a6e64753 SHA-1: 6bc39e08272e5b81926bbfd463cd01bc39578ad0 SHA-256: 482ef1d095f4daa075d50ef35751f44ae90aaf443677ce29c9d792e2f4a0a3cf
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of JavaScript actions, embedded JS streams, and an eval() call strongly suggests the execution of arbitrary code. The embedded JavaScript, though obfuscated, likely attempts to download and execute a second-stage payload, as indicated by the heuristic 'Suspicious extracted artifact — Signals: Long encoded blob, Script obfuscation indicators; files: javascript_obj0013_000.js'.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7257117-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7257117-0
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_000.js
23369d258df1c8ecc86f2951379ceb962d7e27979ec9f6326e8f54ed048248d5
pdf-javascript-stream PDF /JS object 13 at offset 0x336 9173 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).