Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2792fa8a1aeda1…

MALICIOUS

PDF

42.6 KB
MD5: 63b31ca395844e65d530870f599d21c1 SHA-1: 5c550de4d319841f7cb00515fed05204b566238e SHA-256: 9d2792fa8a1aeda1c939ac0704d00bf8b3ca6b09f3e8642ec93b5c1b6980f447
156 Risk Score

Malware Insights

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

The PDF contains embedded content and a script payload, as indicated by multiple heuristic firings including 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'CLAMAV_DETECTION'. The embedded artifact 'embedded_file_obj0008.bin' is likely the delivered payload. The script logic appears to be obfuscated, making it difficult to determine the exact execution flow, but the overall pattern suggests a malicious PDF designed to exploit vulnerabilities or deliver malware.

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
ab038de35d9c885130ec5c5838327b42c228b3db8ceb7dab6889e3ebb51c50f8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42910 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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