Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa7a3c0014aec4a…

MALICIOUS

PDF

79.1 KB
MD5: cf675c069e4fe6490cdc04ad90f5f94c SHA-1: 203d3e2f963ef87981f9d3002701d794298ac135 SHA-256: 1fa7a3c0014aec4a67cecd57283dfe19c2bd06c61f50682fa7c10fc454adfca1
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1204.002 Malicious Link: Clickjacking T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript

The PDF sample contains XFA forms and is flagged for exploiting CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing. This indicates an attempt to achieve arbitrary code execution upon opening the document. The presence of embedded script payloads within XFA forms further supports this, suggesting the script is designed to download and execute 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
93cb88f9b467bcb090231479392c0a0fcade847b8e862eaa22379a34b34e9101		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80273 bytes

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