Malicious PDF — malware analysis report

Static analysis result for SHA-256 e221403bccd148a4…

MALICIOUS

PDF

44.8 KB
MD5: 17dda9c0759327296340ff49e952753e SHA-1: 7a4b49a73a7ae395c3a3f4996c985995962d829f SHA-256: e221403bccd148a4c7a46821f415340578ac9ef3d4a937f7bfa13458ddb27811
104 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and utilizes ASCIIHexDecode filters, indicating an attempt to obfuscate malicious content. The critical heuristic firing for CVE-2010-2883 (Adobe Reader CoolType SING font exploit) strongly suggests this document is designed to exploit a known vulnerability in older versions of Adobe Reader to achieve code execution. The presence of XFA form elements further supports the exploitation vector. No specific malware family is identifiable from the provided evidence.

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
daf5bb36a77c51027f010309fb019ea9cbbfb5ac3369a7c76ff647441d2b1f20		 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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