Pdf.Dropper.Agent-7308469-0 — PDF malware analysis

Static analysis result for SHA-256 d457cbe7d26a11a5…

MALICIOUS

PDF

4.5 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe
MD5: 300420ebc7ff406ca39f36741126bfdc SHA-1: 1d37f7887e347677f4c168f16cdbb94ad804c235 SHA-256: d457cbe7d26a11a5ea2f2652eef8497b429d0e7544019f460dca1fe95720576f
260 Risk Score

Malware Insights

Pdf.Dropper.Agent-7308469-0 · confidence 95%

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

The file is a PDF containing multiple JavaScript streams, including a deobfuscated legacy_pdfkit_stage_000.js. Critical heuristics indicate exploitation of CVE-2009-4324 (media.newPlayer), CVE-2009-0927 (Collab.getIcon), and CVE-2007-5659 (Collab.collectEmailInfo). ClamAV identifies the file as Pdf.Dropper.Agent-7308469-0. The embedded JavaScript is designed to be executed by the PDF reader, likely to download and execute a second-stage payload.

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)
  • ClamAV: Pdf.Dropper.Agent-7308469-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7308469-0
  • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
daa8624ada451e4d8acb6edc2cbae2ec46e3ec10a0caddd3d5402fc964e8bf7f		 pdf-javascript-stream PDF /JS object 6 at offset 0xD84 205 bytes
javascript_obj0016_001.js
a013c301f8f4171f23af496f98a43b217d4cb47e4e17b47eda4be21c5977b13a		 pdf-javascript-stream PDF /JS object 16 at offset 0xE5B 159 bytes
javascript_obj0026_002.js
f330153aafe681bc9733b4d8637c1a83ebd1d1e1dc01a1f57d39bb691a8df774		 pdf-javascript-stream PDF /JS object 26 at offset 0xF27 67 bytes
legacy_pdfkit_stage_000.js
0130049c70d122eda1758ebe304e9b0f8b9b80c34ff0667ca4e9289fcb43cd9b		 deobfuscated-js repeated-marker hex decoded JavaScript at offset 0x1BB 6129 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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