Malicious PDF — malware analysis report

Static analysis result for SHA-256 94deca373b2c4dd2…

MALICIOUS

PDF

19.2 KB
MD5: 44e9b5fb312fbb19557925a25ca80c9c SHA-1: 434572e9d924e9d6286376422c0670afa0fb2aa6 SHA-256: 94deca373b2c4dd2c105aaf32127323d46b388b81340c3320e4dca82bfacfcef
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV with the signature Pdf.Exploit.Dropped-78. Static analysis revealed an embedded script payload and an embedded file, indicating the PDF is likely a dropper or exploit document. The presence of XFA form elements and embedded files suggests a complex attack vector. The embedded URLs are benign or unknown, providing no direct 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
251e0da9df25299bc3907ebfd3ff1bf8be45c2533efae2ff8be77cbc8d8d7772
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18920 bytes