Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dca99d82a0ed5bc…

MALICIOUS

PDF

564.2 KB
MD5: 18ac26ef21d67386485bf2e74e8f2293 SHA-1: 33bc6fec5dd255c965cf6127294dd6996a3cc33b SHA-256: 5dca99d82a0ed5bce0d979466e13171dc94a99f97e091698535e80046d22e6c1
170 Risk Score

Malware Insights

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

The sample is a PDF file that contains an embedded exploit for CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and TIFF images. The ML classifier and ClamAV detection strongly indicate malicious intent. The exploit is designed to execute arbitrary code, likely leading to the download and execution of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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.
  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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
f250dac41c2ad36fa3ff18dd4451c5fcaab265c5b2cf5bc5356a1054bf5f0b1b		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x51 13711 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.