Malicious PDF — malware analysis report

Static analysis result for SHA-256 a915262a0de3a8ed…

MALICIOUS

PDF

44.8 KB
MD5: 9c152a5a4682bc2c96c485477d58f533 SHA-1: 8fe1ee1fd39abcb734d8cbad4d7604f5094ae6a2 SHA-256: a915262a0de3a8edca9ed62cf7f45b75a16dceacde64f5d31a39dc165019a95c
104 Risk Score

Malware Insights

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2010-2883) related to Adobe Reader's handling of SING tables in fonts. This indicates an attempt to exploit the reader to execute arbitrary code. The embedded JavaScript stream is the likely mechanism for delivering a second-stage payload. The presence of XFA form elements and ASCIIHexDecode filters further supports the exploit vector.

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
7edfd35ea60364caf0a10b9b689de6fe5869d5f2e10e905541e21e6cbda503a1		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3784 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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