Malicious PDF — malware analysis report

Static analysis result for SHA-256 73016a6fd8506117…

MALICIOUS

PDF

78.7 KB
MD5: 3a980ab6585e5f3e2a5b004ee5abdecc SHA-1: b02797307c90d4bfc9a182831cb0927d70e44fc7 SHA-256: 73016a6fd8506117179e99125307bf121977040c14f68c503b10581defe31311
116 Risk Score

Malware Insights

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

This PDF file contains an embedded script payload and triggers a critical heuristic for CVE-2010-0188, an Adobe Reader exploit. The exploit is likely used to download and execute a secondary payload, indicated by the embedded script marker. The ML classifier strongly flags this as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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 low 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 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/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
8340191017631b869b49f3240af597c62b1358f77db3edd4eb90238fd800e0a4
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79853 bytes