Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8cacc7fa391bbc…

MALICIOUS

PDF

42.1 KB
MD5: 82e357f37ae71b277ef1d5cfa85f70c5 SHA-1: 3f6d5d2fd21edc2e9d9089a7909eeb05dc5a1866 SHA-256: 2f8cacc7fa391bbc7731a7fb86bf60e50a4f4b23356a40c7aeccaf02fd10bddd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV detection 'Pdf.Exploit.Agent-36830' strongly indicates malicious intent. The PDF structure contains an embedded script payload, suggesting it's designed to exploit a vulnerability and execute further malicious code. 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
f8b1161a4ac902baa6b932ed8177ead01352e9b834865f2466b7447f2216ba3e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42362 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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