Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf16f1a0c6b84517…

MALICIOUS

PDF

4.2 KB
MD5: d3ad2c771cca1a005adcc04c452c1698 SHA-1: 7d8e579c706c226b13779539eced84d3cbbc4690 SHA-256: cf16f1a0c6b845175e3a4407b5f03e1fe9ca1983ee13ec4a7d4ef6e67302f036
126 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains an embedded script payload and triggers a critical heuristic for the CVE-2010-0188 exploit in Adobe Reader. The ML classifier also strongly indicates maliciousness. The embedded file and XFA form are secondary indicators. The primary attack vector is the exploitation of a known vulnerability to execute arbitrary code.

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
3cd7658b22920b64ae877228060b098010a8ceca1675362d0881aa1db737dcca
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12978 bytes