Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3125f16858a523b…

MALICIOUS

PDF

44.8 KB
MD5: 43c8033c95523c94d745cc6672e3e31b SHA-1: 9aefd54b6961912a517380c3507e7b2fde8e5c64 SHA-256: c3125f16858a523b9e5cbeeef47c31418d9f10bdd4029627e2c3b8f604ed688a
104 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell T1059.007 JavaScript

This PDF file exploits CVE-2010-2883, a known vulnerability in Adobe Reader related to font handling. The presence of embedded JavaScript and XFA form elements suggests an attempt to execute malicious code. The primary attack vector appears to be leveraging this exploit to download and execute a further stage, though the exact payload could not be determined from the static analysis.

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
91811590f06ded4cfd9eaa7af985273265668df8c11b637d994dabf73dc09229		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3814 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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