Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa679e00c95bed9b…

MALICIOUS

PDF

42.5 KB
MD5: 85ceee71d423775c8a4b3f7664e404bd SHA-1: 6c6fabd2b492f7374efa5f640a45574d3ea3fef6 SHA-256: aa679e00c95bed9bf163a2f50e00d888a4b89eb3a1523020ea8b0b9702a6a833
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The critical ClamAV detection for 'Pdf.Exploit.Agent-36830' strongly indicates malicious intent. The PDF structure contains an embedded script payload, which is a common technique for delivering exploits. The embedded file artifact further supports the delivery of a secondary payload.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
1f6a1dc2b53cf6df08e18ac9ccb36c2822628f223c21147839e1cfee2c3d6df5
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42739 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely