Malicious PDF / .PHP — malware analysis report

Static analysis result for SHA-256 48b63cb66ff9cc69…

MALICIOUS

PDF / .PHP

13.5 KB Created: 2010-02-24 07:47:31 Authoring application: Uavijahqirake (via Folqakojoj)
MD5: 7cd69d8206bddfd514a5f706fb3eeea7 SHA-1: db567d9f380b194a06afa40e6c26fa55859f5fa2 SHA-256: 48b63cb66ff9cc69eda69b11bd5be4fb0ce7601d7340f1ba2dde7bf0647dff13
258 Risk Score

Malware Insights

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

The PDF file contains multiple critical heuristic firings indicating the exploitation of several CVEs (CVE_2009_4324, CVE_2009_0927, CVE_2007_5659, CVE_2008_2992) through XOR-decoded JavaScript. This JavaScript is embedded within the document and is designed to be executed, likely to download and execute a secondary payload. The presence of obfuscated JavaScript and multiple exploit firings strongly suggests a malicious intent to compromise the user's system.

Heuristics 7

  • 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)
  • 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)
  • 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. (identified after JavaScript deobfuscation)
  • 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. (identified after JavaScript deobfuscation)
  • 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0020_000.js
f8d9573a9212419f10eb59770b1290c68ca973c39c3b17c1a7196a0bf29c0c2c
pdf-javascript-stream PDF /JS object 20 at offset 0x2A7F 281239 bytes
page_word_xor_stage_000.js
71d81fcaead7c494d3bf949429cafadfec5c94eac9431aff0d2c6b5d1685f716
deobfuscated-js page-word XOR decoded JavaScript (decompressed, key=0xED) at offset 0xEB7 3213 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s).