Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac12fb9345e7efe8…

MALICIOUS

PDF

11.7 KB
MD5: 4542dcde7020df4df4c24e67dd2b8495 SHA-1: 0b7683416c18556c085b1ecbefc4696285c3190c SHA-256: ac12fb9345e7efe8f0619d882fb8e2f8ad9577ff8d0ca969604b2bf96b744b74
96 Risk Score

Malware Insights

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

The PDF contains embedded script payloads and is detected by ClamAV as Pdf.Exploit.Dropped-78, indicating it is designed to exploit vulnerabilities. The presence of XFA forms and embedded files further supports its malicious nature. The embedded URLs are not directly indicative of malicious activity but are part of the document's structure.

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
688738c7fb2e9d0deb2eb0d3f6c2bf71c4b8cc12c581c1dc93f15b6bda959d40
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11246 bytes