Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd574f33b4b0440e…

MALICIOUS

PDF

44.8 KB
MD5: 63feecde7e7eedca842be5b1224acd0d SHA-1: 0ce11f5893f3dbd1f068e0d2aaafea24126a0a02 SHA-256: bd574f33b4b0440e03973f40a89d1266dad31175920065b2eff5bd1d79e6683e
104 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains embedded JavaScript and utilizes an ASCIIHexDecode filter, indicating malicious intent. Specifically, the critical heuristic firing for CVE-2010-2883 points to an Adobe Reader CoolType SING font exploit. While no specific malware family is identified, the presence of JavaScript and exploit indicators suggests the file is designed to download and execute 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
15b52f05365da46289b7acadca4d48785e7809952191f5596c36b4566c98a9f8		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3820 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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