Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6210846eb79b114…

MALICIOUS

PDF

42.5 KB
MD5: 432da67817b9cef5867a9ad6d9808240 SHA-1: 5810cce4fbb15b12f1082058ca1c3913e88433bd SHA-256: e6210846eb79b114cb58617bc5e8971504b9b1bcf7826f204d9eae0f4bf7b5fc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36830, indicating it exploits a known PDF vulnerability. It contains embedded script payloads and an embedded file, suggesting it's designed to download and execute a second-stage payload. The document body content is highly obfuscated and appears to be part of the exploit mechanism rather than user-facing text.

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
6b8c973090e43730aad9ff726fa9a97b731643e2191c4f81107c48b39b8bf341		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42755 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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