Malicious PDF — malware analysis report

Static analysis result for SHA-256 01622d9909448a3b…

MALICIOUS

PDF

12.4 KB
MD5: 834824ad48bc4c79bb596ebeef94f926 SHA-1: 06c623c1b39837d421d8c10f8c2bc7eda7ca97f3 SHA-256: 01622d9909448a3b3229d57b59ffc664dd2dade60547ca497cc7b8c8047d4a16
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The file is identified as a malicious PDF by multiple high-confidence heuristics, including ML classification and ClamAV detection (Pdf.Exploit.Dropped-78). The presence of an embedded script payload and an embedded file strongly suggests it's designed to exploit a vulnerability and download or execute a secondary stage. The document body content is not indicative of a specific lure, but the overall structure points to a typical 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
d90ed9160d3adce939cda20f94b65062c2da4427cdb71ec1c33a5777555b3415
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11969 bytes