Malicious PDF — malware analysis report

Static analysis result for SHA-256 3663e8c5ed63a850…

MALICIOUS

PDF

4.2 KB
MD5: ead576b55a19d92ac4c271c9ca53542f SHA-1: d1d34c3027cf210d2930d6e38b1dcaff1f15c2b8 SHA-256: 3663e8c5ed63a8509f5b238e72ed96d3e9a5e8fd5da80966f9875a2ade0cc139
128 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical heuristic firing for CVE-2010-0188, indicating an exploit targeting Adobe Reader's LibTIFF component. The presence of an embedded file and script payload further supports its malicious nature. The ML classifier also strongly flagged this PDF. The primary attack vector is likely phishing, where the user is tricked into opening the malicious PDF, triggering the exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded script payload in PDF stream medium 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.
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
c90ee9595cdaeb1a5fd6ae0d25ac5786faab6ef40a18ec1ca7164028f8c3ace9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 13036 bytes