Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae048eb1e7e10691…

MALICIOUS

PDF

18.9 KB
MD5: 9265fef46c6837b708e269d4b1c09cda SHA-1: 0c12805038c72169ca230dbe1d0f4830a13316a1 SHA-256: ae048eb1e7e106914f99df66a9775e3910250f7cc1ca6c6efbdd09143c89c24a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1566.002 Phishing: Spearphishing Attachment

The PDF file contains embedded script payloads and is flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it's designed to exploit vulnerabilities. The presence of XFA forms and embedded files further supports its malicious nature. The embedded URLs, while not directly malicious, are part of the document's structure. The exact nature of the exploit and payload is not fully discernible from the provided script fragments.

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
622ba6cbe640ff08b5b09a290f94440289aad77cf841d4a77bb6c607965ec043
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18562 bytes