Malicious PDF — malware analysis report

Static analysis result for SHA-256 853a4f4624716169…

MALICIOUS

PDF

63.0 KB
MD5: aa0416679cb6c37e96ea40bac15ba4e5 SHA-1: d82d74aae9c4fcffa2e1e7b43e2315b97fd31a32 SHA-256: 853a4f4624716169415a33a80a42d902901c3b9525f6bb322765d379f48e08d4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains critical heuristics indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms. The presence of embedded script payloads and XFA form scripts further supports the execution of malicious code. While specific URLs were benign, the core exploit mechanism points to a downloader or dropper functionality.

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
4567d3adc46212120f58e59648300f351c8fba8590c2e9800cb41a8ac6151fd4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 63749 bytes

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