Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdef44469dbbd093…

MALICIOUS

PDF

12.2 KB
MD5: 719157ac8c3331ada3818c7f1d011391 SHA-1: 75bbcbb09b112a4ffbd1d259a70164a86f25275b SHA-256: bdef44469dbbd093e14c423675c51841d58d9e3da6dabf7bbe11e73682f0b1da
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates malicious intent. The PDF contains embedded script payloads and an embedded file, suggesting it's designed to drop and execute further malware. While specific URLs were benign or unknown, the embedded nature and exploit detection point to a delivery mechanism for a secondary payload.

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
432c59b5ee60cd70e1aaadfb9734e0058bde6a6c835997a48762a6898b872ca9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11762 bytes