Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b70381fbc362ba5…

MALICIOUS

PDF

44.8 KB
MD5: 9c027cfad7fb9142b90e8fd071eb400e SHA-1: 6b7ceed29f1ef4b06026ce4fa9fa19632868d821 SHA-256: 9b70381fbc362ba59ce9824e26b1efcf16c5cadd845dc73eee3786fbf82abc58
104 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and exploits CVE-2010-2883, a known vulnerability in Adobe Reader related to font parsing. This indicates an attempt to achieve arbitrary code execution. The embedded JavaScript, though not fully analyzed due to its size and potential obfuscation, likely contributes to the exploitation process. The presence of XFA form elements and ASCIIHexDecode filters further supports the exploitation 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
bf2ea15db5cad366018f02ce4b28724028b8cfa3ffcb1de9092b278820dcf543		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3730 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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