Malicious PDF — malware analysis report

Heuristics 11

• Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
  PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
• 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.
• ClamAV: Pdf.Exploit.Agent-35930 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Exploit.Agent-35930
• eval() call high PDF_EVAL
  eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
• unescape() call high PDF_UNESCAPE
  unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
• PDF JavaScript shellcode contains an embedded download URL high PDF_JS_SHELLCODE_DOWNLOAD_URL
  Decoded PDF JavaScript shellcode contains a hardcoded http(s) URL stored as little-endian %uXXXX Unicode escapes. Reader exploit shellcode embeds the second-stage fetch URL this way and pulls it down with a urlmon/URLDownloadToFile-style download-and-execute (commodity downloader behaviour rather than a specific Acrobat CVE).
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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.
• Suspicious extracted artifact info 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.
• 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.InsiderSoftware.com/fontlist/1.0/

  • http://xgazz.biz/var/l.php?i=6
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
  • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://www.iec.ch
  • https://www.verisign.com/rpa
  • http://ocsp.verisign.com/ocsp/status0
  • https://www.verisign.com/rpa0
  • http://crl.microsoft.com/pki/crl/products/CodeSignPCA.crl0
  • http://www.microsoft.com/typography
  • https://www.verisign.com/repository/CPS��
  • https://www.verisign.com
  • https://www.verisign.com/repository/verisignlogo.gif0��
  • https://www.verisign.com/CPS0b
  • http://www.microsoft.com/truetype/0
  • https://www.verisign.com/repository/RPA0
  • https://www.verisign.com/repository/verisignlogo.gif0�
  • https://www.verisign.com/CPS
  • https://www.verisign.com/repository/CPS

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