Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23684c88eec04be…

MALICIOUS

PDF

427.7 KB Created: ”¶ïB¬½þIóH}´;™²XÔCkËÔiOlßÿ\éùË[Ó 2¨Â·!ϧÍQ Authoring application: }ã^Ý¿g4l–QZ½‹ð¶½Õo©oØkÝNœ9֊¢²#zØz;&ǟ›˜ê˜Ò¿õ (via KÂíªè;ÎañÚÓ´†e¸¶í¼»ôþ\áÌfo¿fùñ ¯UÕy¼y½‹‡)O)
MD5: 4b3b41bf4560478344213d871497c39f SHA-1: 0d227e48569fc75188dd4a913bcf9db4e8b45511 SHA-256: b23684c88eec04be4f9e19611a568c483ec6733b3841f5aadeb0c6188d92313d
214 Risk Score

Malware Insights

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

This PDF document is malicious due to the presence of U3D and RichMedia content, which are known indicators for the CVE-2011-2462 exploit targeting Adobe Reader. The PDF also contains embedded JavaScript, suggesting an attempt to hide or execute a malicious payload. The combination of these factors strongly indicates an exploit delivery mechanism.

Heuristics 9

  • Adobe Reader U3D/RichMedia parser exploit critical CVE likely CVE_2011_2462
    PDF combines U3D 3D content with RichMedia/Flash activation and JavaScript/action surfaces. This is the U3D RichMedia exploit document shape associated with CVE-2011-2462.
  • U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED
    PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • Encrypted PDF carries /JavaScript — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS
    PDF declares /Encrypt and also references an executable trigger (/JavaScript). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.