Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c8ba37e4e895b6…

MALICIOUS

PDF

99.6 KB
MD5: 3646336a7d5be20a29f658e47f582ecd SHA-1: d38b46067a205a0a79516f160eeeac6335896ee9 SHA-256: b3c8ba37e4e895b60e4a0795023bc5e3b24d4914fa8f465a3a0a5e5fe3e54db7
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded script payload and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. The XFA form also contains executable script, indicating an attempt to run malicious code. The embedded file suggests a multi-stage attack, likely for downloading and executing a secondary payload.

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
44981dcf7bb07b3cd188f8f9a3fda95c8cd947d5c371e28163eaaded048dba15		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101237 bytes

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