Malicious PDF — malware analysis report

Static analysis result for SHA-256 22dc21b3232e7fec…

MALICIOUS

PDF

36.0 KB First seen: 2026-05-08
MD5: 789ea63d0e8e482372a8ab32082e1c37 SHA-1: 6143143ce1e5ea854ba5e7add7c473306aa3e9e6 SHA-256: 22dc21b3232e7feca4d20891e262a124ce4ddecf9ccaf388edd46c93ae12e0e1
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document exhibits multiple indicators of malicious intent, including embedded files and a script payload. The presence of XFA forms and embedded files suggests a complex document structure often used to conceal malicious content. The embedded script payload is a strong indicator that the document is designed to execute arbitrary code. While no specific family is identified, the techniques used point towards a downloader or dropper functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 script payload in PDF stream info 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 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 46 bytes
SHA-256: 0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712
embedded_file_obj0009.bin pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x149 674 bytes
SHA-256: 7421483854ea71032ce45a5b121dfc3ea43e0eb97d549caa1e92c9b17cf708cc
embedded_file_obj0010.bin pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x430 163 bytes
SHA-256: d05b1f0f578ae3ae183c906203080118cc63576fafc57306eae6303ae9f6fbe6
embedded_file_obj0011.bin pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x518 413 bytes
SHA-256: 2735d9bd11e17bc5237b48ec2a76ef94d85322a37a7a08b7eb5dcb10b8a0a238
embedded_file_obj0012.bin pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6FA 181 bytes
SHA-256: 072090be5ea6c4a216543a1d4332d27d322264f3038bbd986db2a09048143a1c
embedded_file_obj0014.bin pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x7F5 34225 bytes
SHA-256: 00b8454952230064b52a0795e282ac2e12e4bad763f67eec96d69aa37c0dc325

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