Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3de4dd4b9f26f6d…

MALICIOUS

PDF

12.0 KB
MD5: 545cc5b44f20e00972b972016ff0f87e SHA-1: 70d19c64174e4e3bcf45b1f953f46bda3f3623b5 SHA-256: a3de4dd4b9f26f6d05b27f3cdc5c2d73be31b6b7b0ce4331964d0cc9a0847c7a
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates a known PDF exploit. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to drop and execute a secondary malicious component. The embedded URLs are benign or unknown, providing no further IOCs.

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
5cde24614d94c037d94b0d7ccffcbb1c0e0d49cde5d9625d88ce4321366d9754
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11522 bytes