Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b2947c9d4d9b24…

MALICIOUS

PDF

12.1 KB
MD5: 7f6100d07bd4783952de473479e0c8c5 SHA-1: 2595e3f3536b0847ff5e1980c39780d0ca1aef35 SHA-256: 22b2947c9d4d9b24af0770f92f7bc442d7ed399fd8923ca2a12adb440409531a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Dropped-78. It contains an embedded script payload and an embedded file, indicating it is likely designed to deliver a secondary malicious payload. The presence of XFA form elements and embedded URLs, though some are benign, further supports its nature as a potentially exploitable document.

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
c7bc5ee4c4e5420d7b1606525872935016d31d3850814abac01682818a703a9f
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11623 bytes