Malicious PDF — malware analysis report

Static analysis result for SHA-256 0420176bcdaf9441…

MALICIOUS

PDF

13.0 KB
MD5: 19a896476d12ea40e39a0f0896325127 SHA-1: 9bc98dcfe2438b51b5350e549f3656ea35be597b SHA-256: 0420176bcdaf944194fc99ca127167810fa704079375204d82df2c14487a6647
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains an embedded script payload and triggers the CVE-2010-0188 exploit for Adobe Reader. This exploit is known to facilitate the execution of arbitrary code, which is likely used here to download and run a secondary malicious payload. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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 script payload in PDF stream low 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 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/
    • http://ns.adobe.com/xdp/\

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0009.bin
a155c9c654efa5c09e2700335d4be7dfacc24dd37ba6aa1005750ce79c476783
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0xD5 12512 bytes