Malicious PDF — malware analysis report

Static analysis result for SHA-256 3797ad2f397ba5c6…

MALICIOUS

PDF

5.6 KB Created: 2013-10-09 16:18:28
MD5: 489c5b3754f69aa1a08a8bdaf42faf68 SHA-1: 42ed97620611f8a1cad43e4b1fedea6a827db7d7 SHA-256: 3797ad2f397ba5c6ed979f56d4a7f68fa717728f9991d72665aca07a992ee756
186 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature 'Pdf.Dropper.Agent-7249374-0'. Static analysis also detected an embedded script payload and an embedded file, with the embedded artifact being flagged by ClamAV as 'Pdf.Exploit.CVE_2010_0188-10'. These indicators suggest the PDF is a dropper that exploits known vulnerabilities to deliver a secondary malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7249374-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7249374-0
  • 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.
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0004.bin
1a38013077a12f8f5dc8894c28190673fdf52a43c732bb8c48d85db27f4fc79b
pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x45D 39172 bytes
Detection
ClamAV: Pdf.Exploit.CVE_2010_0188-10
Obfuscation or payload: unlikely