Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a010ac16d0fd207…

MALICIOUS

PDF

66.5 KB
MD5: 5559b95f581c09ebd8070af2f75738f8 SHA-1: 3f5fd983bcb4669407f3030730bed82d27506ea9 SHA-256: 0a010ac16d0fd20785cd0aac1fd2354bbea7338692c2209e68b4e105b91ffd1d
156 Risk Score

Malware Insights

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

The PDF sample contains critical heuristic firings indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms. The presence of embedded script payloads and ML classification further supports its malicious nature. The exploit likely serves to download and execute a secondary payload, though the specific mechanism is not detailed in the provided evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
b021052f2dba8701ed22d2998f77229eec98130d862857aca2c1832edcd5543f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 67299 bytes

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