Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc38ea2991771c9e…

MALICIOUS

PDF

44.8 KB
MD5: 1bfe6ab547d2b8a8c70e6f51da825ced SHA-1: 4dcc24f1b77be9d598901e3ce996787987462f55 SHA-256: dc38ea2991771c9e8df1e7148457b42bcb4dc6ce109c9649a33916bafb8e1240
104 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2010-2883, indicating an exploit attempt. The embedded JavaScript stream is likely responsible for executing the exploit payload. While the document body is unreadable, the presence of exploit indicators and JavaScript strongly suggests a malicious intent, such as downloading a second-stage payload.

Heuristics 6

  • Adobe Reader CoolType SING font exploit — CVE-2010-2883 critical CVE likely CVE_2010_2883
    PDF embeds a TrueType/OpenType font with an actual SING table and pairs it with JavaScript heap-spray shellcode. This matches the public Adobe Reader CoolType SING exploit shape for CVE-2010-2883.
  • 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
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
37395fa1882985c6f8fcf92d2500ea806654c2b23dd7de15b5d192b241586081		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3802 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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