Malicious PDF — malware analysis report

Static analysis result for SHA-256 9433b1a84ff537d7…

MALICIOUS

PDF

1.95 MB Created: 2007-03-15 16:54:26 -05:00 Authoring application: PScript5.dll Version 5.2.2 (via Python PDF Library 055 http072057057pybrary056net057pyPdf057)
MD5: 82bb8efa4de02baaeaeeef17706ae111 SHA-1: 758be0170051086e6aa04776f37f5bbe70f1360f SHA-256: 9433b1a84ff537d7ebaba5967c726fc36905d638dd74d2ce426240d1e0211864
118 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659 (Collab.collectEmailInfo). This indicates the document is designed to exploit this vulnerability. The embedded JavaScript, named 'javascript_obj0009_000.js', is likely responsible for executing the malicious payload. The presence of JavaScript actions and unescape calls further supports the malicious intent.

Heuristics 6

  • 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)
  • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0009_000.js
6d92b800dbf90cafb4fd369fcfae7caccd22d3ea1bb3c2e62203d1f19c3a5620		 pdf-javascript-stream PDF /JS object 9 at offset 0x2EE 1660 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s).

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