Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf048f3ca09fb95…

MALICIOUS

PDF

44.9 KB
MD5: 3eca1e03056d0b1103e7d6ff78bf556f SHA-1: 4dfd7fe4c8f02cd0faa609f949c02de3ee6f2c3a SHA-256: 2cf048f3ca09fb952f95197fba6feaa4febd36df95d98400cc20555766ce2a22
104 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for the CVE-2010-2883 Adobe Reader CoolType SING font exploit. This indicates the file is designed to exploit a known vulnerability in older versions of Adobe Reader to gain code execution. No specific malware family could be identified, but the exploit suggests a downloader or dropper functionality.

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
41a86703b170b533f2c922b7ef2f7c614740ba3af44cd597b2ab8a4b6d756614		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3910 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

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