Malicious PDF — malware analysis report

Static analysis result for SHA-256 29edbcf845fa56ba…

MALICIOUS

PDF

2.7 KB Created: 5318-01-01 Authoring application: 5777
MD5: 1c2056a2e6d19528216de4a8ec73ffd8 SHA-1: 6605f14b073af84bff2701f760ae334602fbe161 SHA-256: 29edbcf845fa56ba65401899fae8deecfdf60a73de10562667865840b04b0061
96 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic flags suspicious indicators such as hex escape obfuscation and script obfuscation within the extracted JavaScript file 'javascript_obj0013_001.js'. ClamAV also detected this file as 'Pdf.Exploit.Agent-36014'. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute malicious code.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
  • Suspicious extracted artifact medium 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_001.js
9be974539e4dba08051e04a3ed1bf2bb5fcc8a56cf22949bc8db1b5becdbef02		 pdf-javascript-stream PDF /JS object 13 at offset 0x328 4811 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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