Malicious PDF — malware analysis report

Static analysis result for SHA-256 7278faa70024a334…

MALICIOUS

PDF

42.5 KB
MD5: eacbb4182ae4c6bf636cfb5509e7f33e SHA-1: 1dc9b41166303591fea40769a14fcc6b7d0f256a SHA-256: 7278faa70024a3344645c42e77c7c506f8845d45da1b8935d71d72f462720ec4
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains embedded JavaScript, flagged by heuristics as a script payload. ClamAV detection (Pdf.Exploit.Agent-36830) and ML classification strongly indicate malicious intent. The embedded artifact 'embedded_file_obj0008.bin' is likely the second-stage payload downloaded and executed by the script.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 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 script payload in PDF stream low 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 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
357e15cf46c6127e6b3f170eca48d39985e58ce8329f1b0b2b6dd752ffbd41fe		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42770 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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