Malicious PDF — malware analysis report

Static analysis result for SHA-256 14584dd747dbcc55…

MALICIOUS

PDF

4.0 KB
MD5: 3fec2b2ebbe0622c532d42dfdecbc02f SHA-1: 85160336a6063e08d14e5e74f2922c353e1c6df7 SHA-256: 14584dd747dbcc551709af2669bdbeb6c8be3cdad29871e152293e25aa9c3807
250 Risk Score

Malware Insights

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

This PDF document exploits CVE-2010-0188, a vulnerability in Adobe Reader related to the LibTIFF library and XFA forms. The exploit is embedded within an XFA form and likely leads to the execution of a second-stage payload, as indicated by the detection of an embedded malicious file by ClamAV. The benign URLs present are related to XFA schema definitions and do not indicate malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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: Pdf.Exploit.Pidief-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Pidief-3
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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
  • 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/
    • 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
70cbde9cc7a626c738078c45a5e860d525d803a8856875884d2ad3cb357a5ca9		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x6C 13441 bytes
Detection
ClamAV: Pdf.Exploit.Pidief-3
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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