Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a27c0c012a6bd29…

MALICIOUS

PDF

1.7 KB First seen: 2026-05-11
MD5: 99de025dfae6d59d77d3e02b47377dff SHA-1: 0834a0a3d5d71d13ffe10b9759945118a1416574 SHA-256: 7a27c0c012a6bd29c1eef81094bc156784ab8cc5803de2e0a18d478aa636854c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an XFA form and triggers a critical heuristic for CVE-2010-0188, an integer overflow in LibTIFF used by Adobe Reader. This indicates the file is designed to exploit this vulnerability for client-side code execution. The ML classifier also strongly flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader XFA LibTIFF integer overflow — CVE-2010-0188 critical CVE likely CVE_2010_0188
    An XFA image field carries a TIFF whose IFD has a malformed tag that overflows the LibTIFF parser (CVE-2010-0188).
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.4/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x54 15238 bytes
SHA-256: 3550cd0f1e620529e3d094abcbe3207666bce7b845de2e6382f1442265974cd4
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
xfa_image_rawvalue_000.tif pdf-xfa-image-tiff XFA image/rawValue TIFF payload near offset 0x548 10414 bytes
SHA-256: 008942c5ec74b99eb47f6f8e8fa90e0c6bc133c63d19ad569da30f447c98d886
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: heap spray 0x41 (A)

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