Malicious PDF — malware analysis report

Static analysis result for SHA-256 912f1c279a873bc0…

MALICIOUS

PDF

44.8 KB
MD5: 81ab1c57856cbc0da9afd393b9747941 SHA-1: ebdd1a3b3a9d3974c8dcfcbd4b2e0890889a8ed6 SHA-256: 912f1c279a873bc03b08565919f3a3a6a3f4c2dcf1aa443cd772559f08c3e299
104 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File T1059.001 Command and Scripting Interpreter: JavaScript T1566.001 Phishing: Spearphishing Attachment

This PDF file contains embedded JavaScript and triggers a critical heuristic for the CVE-2010-2883 Adobe Reader CoolType SING font exploit. The embedded JavaScript is likely used to download and execute a secondary payload, which is a common technique for initial access. The presence of XFA form elements and ASCIIHexDecode filters further support the exploit 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
7c568dff61c856f7ab7c9d6bf359d2135cad95c479eabdb538d8d84443f99266		 pdf-javascript-stream PDF /JS object 12 at offset 0xA0BA 3802 bytes
font_00_sfnt_off0000033c.bin
683fcffe9abaad29001e134bdd9ad7d1628d5cbbf628c451b6c621f202a7dae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C 65932 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.