Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0278e7fcd400f36…

MALICIOUS

PDF

7.7 KB Created: 2012-04-17 19:53:38
MD5: 899bc58b346397d5c45b016ce7ba28c9 SHA-1: 12ae075fe6bec1c2086803be1a75db19d442f2a3 SHA-256: e0278e7fcd400f368ffe75cecee4899bc119fa1903b3b078a84ef48b462231d5
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File Execution T1059 Command and Scripting Interpreter

The PDF file contains an embedded script payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. ClamAV detection 'Pdf.Exploit.Dropped-156969-1' strongly suggests this is a known exploit. The embedded file artifact further supports the delivery of a secondary malicious component. The primary attack vector appears to be exploiting a PDF vulnerability to execute arbitrary code.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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
embedded_file_obj0008.bin
9fb5ad468b19bfe404ff6498890aac1dfcc3aaf43de705e5727db32202875222
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xBAF 7163 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).