Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0d491769177fff8…

MALICIOUS

PDF

12.0 KB
MD5: f17501125927320ee7717d710f82cb4d SHA-1: c648f8315375d1bf6ee16d45a9521db7fbfce158 SHA-256: c0d491769177fff87d2df4dc249a3bf7b0d24121e0933d81e3661fd39529583f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF was flagged by multiple heuristics, including ML classification and ClamAV detection as 'Pdf.Exploit.Dropped-78', indicating it contains an exploit and is likely a dropper. The presence of an embedded script payload and an embedded file further supports this. The document body content is not indicative of a specific lure, but the technical indicators strongly suggest a malicious exploit delivery mechanism.

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
0b6737b24a013b9053c4957e37f43ba6944def2852a3a1b246b783c180da2045
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11576 bytes