Malicious PDF — malware analysis report

Static analysis result for SHA-256 a973104dd2469bb9…

MALICIOUS

PDF

91.5 KB
MD5: 09b452012d609859cda8c13005621467 SHA-1: 4211223143eca9132fc984187dbaa5b595825a51 SHA-256: a973104dd2469bb9ed0e0af3912191fdc661af2b3592541d0335f49131697b28
196 Risk Score

Malware Insights

MITRE ATT&CK
T1190 Exploit Public-Facing Application

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF processing. The heuristic firings indicate an embedded script payload within an XFA form, which is characteristic of exploit documents designed to deliver a secondary payload. The embedded URLs, while not directly malicious, are related to XFA schema definitions, suggesting the document's structure is being leveraged for exploitation.

Heuristics 7

  • 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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
23c1f97c990db4606776d0d0ee734bfbb03993f4e010124f43f42e6ce1d35817		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 92913 bytes

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