Malicious PDF — malware analysis report

Static analysis result for SHA-256 8835ab5198d5d1d4…

MALICIOUS

PDF

169.2 KB
MD5: 9b4e378bd9d4fb00cf8fd866203b8620 SHA-1: 6db42aa6e37b84569ae7e9268b64f8fb4bff7a9e SHA-256: 8835ab5198d5d1d47d319a2903ea5a5399b405f9eb8c191a85960b5286f5adb0
170 Risk Score

Malware Insights

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

The sample is a PDF document that triggers the CVE-2010-0188 exploit, which is known to be used for client-side code execution. The ML classifier and ClamAV also flagged this file as malicious. The exploit likely serves to download and execute a secondary payload, though no specific URLs or further execution details were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
37c7ee258dccfb753b8aa927a2ee75cdcebc95d9625c16e71a628ce44938145e		 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.