Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c7ae1cffa9811d6…

MALICIOUS

PDF

42.5 KB
MD5: 6a709c770b13f5616dc6cc96b52e5722 SHA-1: 593b555d596df3ecdeb2cc880d75f052b56b24f6 SHA-256: 2c7ae1cffa9811d6d2321fbd99e031f07ead176f60a2f430b7393ddd087f865a
156 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Agent-36830' and the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic indicate that this PDF contains and likely executes an embedded malicious script. The script's purpose is to download and execute a second-stage payload, as suggested by the embedded file artifact. The embedded URLs, while not directly malicious, are associated with the PDF structure.

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
8a90e9e93525975f92bd42e6f7783f7f8636573bb835379efb9d4faaf023f902
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42739 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely