Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc05e2d155c81b8…

MALICIOUS

PDF

507.1 KB Created: 2008-11-20 09:16:01 +05:30 Authoring application: Acrobat PDFMaker 7.0.7 for Word (via Acrobat Distiller 7.0.5 (Windows))
MD5: 2a82c4e85eae11c88b93ec12b98aba13 SHA-1: f4d46cc5e5a86d63e03612874e196d5d301e223e SHA-256: 7dc05e2d155c81b8b0b6cfabf363fe24ba9b4fef14af1fd0ddc204cb5bb22fdd
180 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-0927, indicating exploitation of a known vulnerability. The presence of JavaScript and the specific CVE exploit suggest the file is designed to download and execute a second-stage payload. The ClamAV detection further supports its malicious nature.

Heuristics 7

  • 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. (matched in decompressed stream)
  • ClamAV: Pdf.Exploit.Agent-35646 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35646
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded 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.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • 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/pdfx/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0347_000.js
07b39465638b36bde3c07ff455eb653151c7e164200c36e48bd09274fbef265e		 pdf-javascript-stream PDF /JS object 347 at offset 0x7E48F 3693 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
font_00_sfnt_off0002efad.bin
ff666f6e30c00e41151f4fb87ce622cb3aa58cbc0d424169e92436afba616314		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFAD 3768 bytes

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