Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda1d0fd532f21b6…

MALICIOUS

PDF

2.05 MB
MD5: a7060f504b593e1dad804eadfad5f8be SHA-1: 547c37f1bb20c8d66dec52607c50e98a6336702c SHA-256: bda1d0fd532f21b693407fb4a15938a8715a27ab96eb83e8aebf13a8c6bb01e6
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that contains an embedded XFA form and exploits the CVE-2010-0188 vulnerability in Adobe Reader. This vulnerability is used to execute a malicious payload, likely a secondary stage, as indicated by the 'POLYGLOT_CHILD_PDF_STATIC_TRIAGE' heuristic firing on an embedded PDF.

Heuristics 4

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off0000004f.bin
4039e9c998334ff031d82f5ca110045c516b3c5ea8785535b9ad33d41166a47b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F 13560 bytes
polyglot_child_pdf_off0020a680.pdf
c102d44267abc2eb3a0470e7f7826cc96337accbed8026665157470b23634d44		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x20A680 12066 bytes

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