Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1b2c60b3d41b77a…

MALICIOUS

PDF

11.7 KB
MD5: 5b70bb06a5890a14239f6d0a918882eb SHA-1: 3f3c8d2ea84d31d95e92ed8326dcade46d4f1ef3 SHA-256: d1b2c60b3d41b77afba486699ba94ebf54e7ed2714280a740f2f84ece108ad3b
96 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Exploit.Dropped-78, indicating it contains known exploit code. The presence of an embedded script payload and an embedded file further supports its malicious nature. The file likely attempts to exploit a vulnerability to download and execute 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
460515b621f5ea165e73a6bd794dabfc9c61824b3d037a106efb152d07f6fff4
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11240 bytes