Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ea0f41d71ef9f5f…

MALICIOUS

PDF

42.9 KB
MD5: 64ecf3fe855e9c0d4b0a74342814ee30 SHA-1: 8862f706525d0a5db7a595754d3b4257c66e840d SHA-256: 3ea0f41d71ef9f5faee5b184a7c036fd99f66510b44ff7e9dca7df3d6e11c16f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The critical ClamAV detection 'Pdf.Exploit.Agent-36834' strongly indicates a known PDF exploit. The presence of embedded script payloads and embedded files further supports this, suggesting the PDF is designed to deliver and execute malicious code. The document body contains obfuscated JavaScript-like code which likely attempts to exploit a vulnerability or download a secondary payload.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36834 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36834
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
embedded_file_obj0009.bin
83d8d46e9c78ed844fddfb777d8939578aea0b65895f27965c1cbca379cbfc48		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 690 bytes
embedded_file_obj0010.bin
1c5b7971dff586207e8235b49916e2677297f244f218ae7d19c6ac9623332af8		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45F 100 bytes
embedded_file_obj0011.bin
c017c5aaea365dc10c973bf4e97af5fb31607aafcd27631d2a52b411e7bf0f4f		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x50E 594 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x7AB 190 bytes
embedded_file_obj0014.bin
017fd43a5c7bcb568e83bb4c080a25509ae4353935005623bbc4e0ccedb5caef		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x8B6 40855 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36834
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
03172373f36e220deaea3baf69186e2a8bef99633879227f39b2a0b4510201ee		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA897 138 bytes

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