Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac756091f0e143bd…

MALICIOUS

PDF

19.2 KB
MD5: 5971cb19e204f2497c222d34005021cd SHA-1: d3d35e738b75653da44fc8dba70aa90fc2209db3 SHA-256: ac756091f0e143bd21b32ae61ac87c124e59e962d2a2b298969c0998f6cc5af9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious and designed to exploit vulnerabilities. The presence of an embedded script payload further supports this, suggesting it's used to deliver a secondary stage. While specific script content is not detailed, the embedded nature and exploit detection point to a common delivery mechanism for malware.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
0703c3abdf53356c3369e2a1902af5c2bc8b54c666dde3d6fd3c1f15c51c8628
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18950 bytes