Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e819b7e64a0e138…

MALICIOUS

PDF

79.2 KB
MD5: 9f5ccc93ef4a16c52df4fdc3315becac SHA-1: 0d4d97eb50b00d88f4e4789521cf6f2cfe645976 SHA-256: 9e819b7e64a0e138a3fdec37d4da1f7613e04b38d7c466b71bb14ca410e82592
136 Risk Score

Malware Insights

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

This PDF document exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF processing. The heuristic firings indicate the presence of an embedded script payload within an XFA form, designed to be executed upon opening the document. While no specific malware family is identified, the exploit's nature suggests a delivery mechanism for further malicious activity. The embedded URLs are related to XFA schema definitions and do not appear to be directly malicious.

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
e7cf93ece687320c4dda73d4b0f0a23acf0d1e0bd3a89c48c598c8b4312d8f34		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80359 bytes

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