Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d5da0ac24da62d…

MALICIOUS

PDF

44.8 KB
MD5: 47b8259274dc4cd9b9bed1a1a624a531 SHA-1: 8269f1bcac17304e1d27791f7f855ac8cc2ced6a SHA-256: b9d5da0ac24da62d4219c1f8edae76a7524af8e7e9ae09f71f716a6fd4e61a11
104 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2010-2883, indicating an exploit attempt. The JavaScript is likely used to download and execute a secondary payload. The presence of XFA form elements and specific PDF filters further supports the exploit vector. The document body is truncated and does not provide further context on the lure.

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
97cc5f7028115d3da4c19dd0cbb83e598255a347e79809b53063656ae018efe8		 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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