Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abff72a25403e7c…

MALICIOUS

PDF

2.7 KB Created: 4981-01-01 Authoring application: 2662
MD5: 559bb55d9baaf5ef7be9c01471837979 SHA-1: fb2d0cb3702819de0088250d83d5e4eaba409d54 SHA-256: 7abff72a25403e7cf3cf93a1c2b589f6f72ebcdeb45c6727e3f937c87f103ab1
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'. ClamAV also detected the file as 'Pdf.Exploit.Agent-36014', suggesting it exploits a known PDF vulnerability. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured.

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
359b199be01a31670ea7e95809526f69ceabffe6c64df6a91744eb6dede12549
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4803 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).