Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7116bd53c560685…

MALICIOUS

PDF

12.1 KB
MD5: bce7e361aa74996720b1bb2278222d01 SHA-1: 4426a2193fea5fe9e7134293d50b586ed80ee87b SHA-256: e7116bd53c560685e914ad53c560454df664ae7d797779baf12ce9fdd77edd76
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Dropped-78) and a high ML score. It contains an embedded script payload and an embedded file, indicating it is designed to drop and execute further malware. The presence of XFA form elements and embedded URLs, though some are benign, are common in exploit documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
17d468e18e3e15fea8de64fd6336ea2d73b027c99a462443619a4f618df74ca0
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11647 bytes