Malicious PDF — malware analysis report

Static analysis result for SHA-256 032bff447ff94ac5…

MALICIOUS

PDF

53.6 KB
MD5: b9445b268b7068e78fea6bd3d7f236da SHA-1: 86407e111cec900bbadb5a42d7950464134588a1 SHA-256: 032bff447ff94ac54c6626dda9781932fde88ec0c8bc0d3d7cb587fe81912e1b
116 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that is flagged as an exploit. The JavaScript is designed to download and execute a second-stage payload, likely from the embedded URL. The ML classifier strongly indicates maliciousness, and the XFA form suggests a known exploit vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://www.bitstream.com
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
97bc96839704ed310d5cd09de564691f74ff79e48b8e394299269c046ceb380d		 pdf-javascript-stream PDF /JS object 12 at offset 0xC3C2 3878 bytes
javascript_obj0012_001.js
54bc56912eeb3413a4a889fdd8213c4aaaf11b74dd78b53326d1e9a137a4ca48		 pdf-javascript-stream PDF /JS object 12 at offset 0xC3E4 4764 bytes
font_00_sfnt_off0000032f.bin
8df6dacc0479ff4830ec739a9fccdb368896923613952b90e7ca6eb841a138ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32F 49224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.