Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70c476148a592b5…

MALICIOUS

PDF

99.7 KB
MD5: 65e7be0abc8c5fe47b05e7494871554e SHA-1: 38be91f690ccab11f1157b78f40301fffce212f5 SHA-256: c70c476148a592b52a190ebf90d233e71bdc05d620bd51b3e5746609b8b3b98c
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 exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The critical heuristic indicates this exploit is present and likely decodes a payload from a raw stream. The presence of embedded script payloads and XFA forms with executable scripts further supports the exploitation of this vulnerability. The primary intent appears to be the execution of arbitrary code, likely for downloading and running a secondary stage, though the specific payload could not be determined from the provided evidence.

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
c0a5c0450b38c48256c65ed689fc1b29e686bd94d34d1958c3fad044ae923bf2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101328 bytes

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