Malicious PDF — malware analysis report

Static analysis result for SHA-256 4302cead08864b1f…

MALICIOUS

PDF

983.0 KB Created: 2010-01-06 11:43:37 +08:00
MD5: 101f1bc9b0942ec70b75c73a3a72d574 SHA-1: 57650d1e5e2c08edbfce692728d5362728eda41c SHA-256: 4302cead08864b1fb1629cdc6c3b23c745a1326bb1662dc2f8f464b30684452b
86 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-4324 (media.newPlayer). This indicates the document is designed to exploit this vulnerability. The embedded JavaScript likely downloads and executes a second-stage payload, although the exact URL or payload could not be reconstructed due to obfuscation or truncation. The PDF also contains embedded files and images, suggesting a multi-stage attack.

Heuristics 6

  • 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. (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.
  • 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 (matched inside decoded stream)
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 2 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.
  • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0043_000.js
1a5d85c21cce1724fe86b59506f1a02a0438aae5349a6a29a6c984780390a34f		 pdf-javascript-stream PDF /JS object 43 at offset 0xF5413 249 bytes
javascript_obj0045_001.js
c3498727efb51d96cec09f2b966f26c99900a481ace896b31671835f19da3085		 pdf-javascript-stream PDF /JS object 45 at offset 0xF55E2 119 bytes
javascript_obj0050_003.js
667817e8c69082751b295c22ee07fbb34b4c8fdb1dc985dd2fba872628241f39		 pdf-javascript-stream PDF /JS object 50 at offset 0xF572E 779 bytes
objstm_0051_00.bin
1d28b5aa5fb3cfa4e814510749982f5657dff41d85325033f6756f903afd0417		 pdf-objstm-decoded PDF /ObjStm 51 0 obj (inflated) 48 bytes

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