Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c37c7c16f44571…

MALICIOUS

PDF

5.6 KB First seen: 2026-05-09
MD5: f01c2719f1f742d9fb4bdf4f0fa9f535 SHA-1: 1d4f4f272744365f74d60e4127a8769b8d6b6a57 SHA-256: d5c37c7c16f445713f65c881ee647f3d631c8145a7c5916b5ab12bae7d4d7245
172 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution: Malicious File

The file is a PDF document that has been flagged by multiple heuristics and ClamAV as malicious, specifically indicating an exploit for CVE-2010-0188. The ML classifier also strongly indicates maliciousness. The embedded artifact, also detected by ClamAV, suggests the PDF is a dropper for further malicious content. The attack pattern involves exploiting a PDF reader vulnerability to execute arbitrary code.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
  • 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 script payload in PDF stream info PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Suspicious extracted artifact info 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 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/2.5/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xfdf/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0006.bin pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x40C 33620 bytes
SHA-256: 0cddc964caaccd2bc3373a87629df753c8189672b8ac982dc02b02d74ce47d7b
Detection
ClamAV: Pdf.Exploit.CVE_2010_0188-10
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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