Malicious PDF — malware analysis report

Static analysis result for SHA-256 37b68fd48e59d435…

MALICIOUS

PDF

12.0 KB
MD5: 784a94890eb1b5ef90078346b46f9a49 SHA-1: 863f199c68d69799ef81cb670af2369986f5d7d9 SHA-256: 37b68fd48e59d4356bc80e2dc2b671105abd248b2108b12af8e2253d47d99d30
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-78' and the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic indicate that this PDF contains and likely exploits an embedded script to deliver a malicious payload. The presence of embedded files and XFA forms further supports this. The embedded URLs are not directly indicative of malicious activity but are present in the document.

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
532f9014e2e572ecfdc38eb15a90b5605aefdf68d88c99c1a5e3968ca0bedfc7
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11511 bytes