Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23b0438d4dc5fb2…

MALICIOUS

PDF

6.4 KB
MD5: ad74e7a7e0248c7315292126d14c7cce SHA-1: 480607dc7815221d75981d8e3aca52e3ce5dfe17 SHA-256: e23b0438d4dc5fb20d33548234b22f3a0831c50f1320fea8451656f4fd3cb5a1
136 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and exploits known vulnerabilities (CVE-2007-5659 and CVE-2008-2992) to achieve arbitrary code execution. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload. The presence of these specific CVEs indicates a targeted attack leveraging known PDF reader flaws.

Heuristics 5

  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (matched in decompressed stream)
  • 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. (matched inside decoded stream)
  • 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)
  • 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.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000325.js
eb87fb353063862f4509c1a04d5960e1749bb87294f81594ceda37daa32f53f7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x325 800 bytes
objstm_0024_00.bin
840d156727a1f748c1f0d9aefb0d0508d9aa2d0368b541de88792d9531d04bb3		 pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 331 bytes

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