Malicious PDF — malware analysis report

Static analysis result for SHA-256 402caae6d0a9ff84…

MALICIOUS

PDF

78.5 KB
MD5: f1c9c8a752142d99869f2b1788b175fd SHA-1: d35d57030e3f38b18b47da349022749520ce8e7b SHA-256: 402caae6d0a9ff849f4ceda2cde0e7dc6fe53421f5bc4e4eeecd66e5170eed62
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link/Object: Malicious File

The PDF file contains embedded XFA forms and triggers the CVE-2010-0188 exploit, indicating it's designed to compromise Adobe Reader. The embedded script payload further suggests the execution of malicious code. No specific family could be identified, but the exploit and embedded script point to a downloader or dropper.

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • 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
5bef8d92b20c714635b2198548552a9c8649ea2adada90326a21e3bb3a53d114		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79584 bytes

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