Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2f4a158f51b14d…

MALICIOUS

PDF

45.0 KB
MD5: 7ad69956afc7eb7f36895e7975b6f610 SHA-1: 92ebd903225a6ab310864829b1fcf59935f929c9 SHA-256: 7d2f4a158f51b14d42bbb21f2b6ef42f3a4de10c31dc53d22ddcda8d89418a92
104 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains embedded JavaScript and utilizes the ASCIIHexDecode filter, indicating malicious intent. A critical heuristic firing confirms the use of the CVE-2010-2883 Adobe Reader CoolType SING font exploit. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access.

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
4d2885746b2ce74f41449ba121c808d60187263e658a9349991a00358c173647		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 4012 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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