Malicious PDF — malware analysis report

Static analysis result for SHA-256 f014d477a3a5f39b…

MALICIOUS

PDF

42.4 KB
MD5: 4a5be96008e105afa0d1d20b0861bbe7 SHA-1: f19f437c302930aa5e3849b26288c0cc74bc7611 SHA-256: f014d477a3a5f39b6656a7340afaceae26b995787889522929bb0d13cd0afd95
156 Risk Score

Malware Insights

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

The PDF was detected by ClamAV as Pdf.Exploit.Agent-36830, indicating it contains a known exploit. Heuristics confirm the presence of an embedded script payload and an embedded file, both common delivery mechanisms for exploits. The embedded script appears to be obfuscated, making its exact function difficult to determine, but it is likely responsible for executing the embedded 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
a835957b0e16ffe5401f882c096cb4417817ad1c7b8bb33055e4dc90579842a4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42686 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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