Malicious PDF — malware analysis report

Static analysis result for SHA-256 8048a8796098a38a…

MALICIOUS

PDF

1.9 KB First seen: 2026-05-11
MD5: dee81a6c27836959abb92f32a680d5ef SHA-1: 61475e7b37e459ed1c6a16166a6534e3656c5d09 SHA-256: 8048a8796098a38abda34a9e9d8fd7914d3fb567082afc06973565fdb871d52d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an embedded object and triggers a critical heuristic for CVE-2010-0188, an integer overflow vulnerability in Adobe Reader's XFA processing. This indicates the file is designed to exploit this vulnerability for client-side code execution. The ML classifier strongly supports the malicious verdict.

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
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/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 0x50 13387 bytes
SHA-256: 1f7c434231e50fdede70f28fb590c8298ef2e5425b2790ac0d0fe10340b0213b
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 0x586 8610 bytes
SHA-256: 43961b503ee249d49134c9c05ed9e8c67b7e8f7efb7616738fc70f2dc9cfb435
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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