Malicious PDF — malware analysis report

Static analysis result for SHA-256 2469ffc663f60b77…

MALICIOUS

PDF

4.2 KB First seen: 2013-06-07
MD5: 8fae87ee99b33e6c839a12d2b67381ad SHA-1: 2bb89a698ed1c375122aa4c7eccdb27a808f8804 SHA-256: 2469ffc663f60b77fdb99bf37779daed9695bd2e341a19713ad85e385a1884da
110 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged for containing an embedded script payload. This suggests an attempt to execute malicious code upon opening the document. The presence of XFA forms and embedded files are common techniques used to deliver such payloads. Without further deobfuscation or execution, the exact nature of the script's action remains unclear, but it is likely intended to download and execute a secondary payload.

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 info 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/1.0\ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 13031 bytes
SHA-256: 115d4d565f70bf1efb87e627d2c0635f57301ab632b8c5901cbc4921d902cbba

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