Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e588d57b98dd18…

MALICIOUS

PDF

62.1 KB
MD5: ec95f01666872efa1315f0d3b02dce25 SHA-1: b1df1a7fee68b5c226833664f4efda8353f872f5 SHA-256: 67e588d57b98dd18ba48747000b24062a0f24624745d1d282864546d2c327ac0
110 Risk Score

Malware Insights

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

The sample is a PDF document that contains an embedded XFA form and triggers the CVE-2010-0188 exploit. This exploit is known to target Adobe Reader and is used to achieve arbitrary code execution. The presence of an embedded file further suggests the document is a dropper for additional malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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
  • 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.
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
e7099d668a6ff14c889f9421e328769ed711088419e70c41166b46b9c9df41a9		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x53 106310 bytes

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