Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d3073ef16b1fe9…

MALICIOUS

PDF

100.0 KB
MD5: 48c720f60f4ffcdadee4ec74505fdadf SHA-1: ad9fc69947a7b6e39519400c550fc8ee52083a70 SHA-256: c2d3073ef16b1fe94ff73674be1a1c397c10860df0b007ac38cbd223e892ebc4
136 Risk Score

Malware Insights

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

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA forms. The heuristic firings indicate the presence of an embedded script payload within an XFA form, designed to leverage this exploit. This suggests the document is crafted to deliver a malicious payload upon opening in a vulnerable version of Adobe Reader.

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
02861178a7c91c94ffbab2ec4c61d60000796f805be3a49f7926bb80a1ac05d1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101608 bytes

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