Malicious PDF — malware analysis report

Static analysis result for SHA-256 333bb55a74f9f3cf…

MALICIOUS

PDF

44.7 KB
MD5: c4f138f4a12bf4a5ae76bbac3275959e SHA-1: 3a7b5df6c0b495ef84ba5e1a87dab81d353aba81 SHA-256: 333bb55a74f9f3cf62c38ddc5f07ea34d5e764ccce73235ce21caa4f6fc36587
104 Risk Score

Malware Insights

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

This PDF document is malicious due to the exploitation of CVE-2010-2883, a known vulnerability in Adobe Reader related to font parsing. The presence of embedded JavaScript and XFA form elements further indicates an attempt to execute code. The primary attack vector is likely the exploitation of the Adobe Reader vulnerability to achieve arbitrary code execution, potentially leading to the download of additional malicious content.

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
965d8336430d1d912ea6027651be40b6543ecf2c1c8510fd2720e09a6d6f3e08		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3694 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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