Malicious PDF — malware analysis report

Static analysis result for SHA-256 979282af322e7c05…

MALICIOUS

PDF

5.1 KB Created: 8195-74-82 48:75:93 -62:86 Authoring application: Acrobat Editor 8.0 (via Adobe Acrobat 8.1.0)
MD5: 2e433a2fcdc58828ccf4fb7e6b0d01da SHA-1: ab32ec5410f0fa4c92e01d3ef8cac5248cb0b50f SHA-256: 979282af322e7c058029c4c4dcda56c028991f39fb04d594b0643c78b75d29f5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659 (Collab.collectEmailInfo). This indicates the sample is designed to exploit this vulnerability to execute arbitrary code. The presence of JavaScript and the specific CVE exploit suggest a malicious intent to compromise the user's system, likely for further payload delivery or information gathering.

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/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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0028_000.js
903a6a1718be6e3cac76060f33235ae37e0283456b4068704253ef0bf4ece9d2		 pdf-javascript-stream PDF /JS object 28 at offset 0x4D7 3569 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).

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