Malicious PDF — malware analysis report

Static analysis result for SHA-256 c966062ea889e23a…

MALICIOUS

PDF

91.5 KB Created: 2005-03-16 09:57:23 Authoring application: - http://shbox.de (via GPL Ghostscript 8.15)
MD5: 031fb51aaeaf746b1eddda3017a79c76 SHA-1: 10a0f7fa50617a6477d3da3c46cb8baa03f57793 SHA-256: c966062ea889e23a57c5598e654b9ffa6efe4dae1206292b05150a2096c3df9f
384 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell T1071.001 Application Layer Protocol: Web Protocols

The PDF file contains a JavaScript action and a launch action that targets cmd.exe, indicating an attempt to execute arbitrary commands. This is further supported by the 'CVE_2010_1240' heuristic, which specifically flags Adobe Reader launch action command execution. An embedded PE payload was also detected, identified by ClamAV as 'Win.Trojan.Rozena-131'. The embedded URL 'http://shbox.de' is likely used to download additional malicious content.

Heuristics 10

  • Adobe Reader Launch action command execution critical CVE exact CVE_2010_1240
    PDF uses the Adobe Reader/Acrobat Launch action pattern associated with CVE-2010-1240: cmd.exe is invoked with attacker-controlled parameters, paired with an embedded/exported payload.
  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOAD
    PDF stream bytes contain an embedded Windows executable with a verified PE header. Exploit chains often hide droppers inside ordinary streams rather than standard /EmbeddedFile attachments.
  • /Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\delphi.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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://shbox.de

Extracted artifacts 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0097_000.js
e93bca1ad75a09883b6f8ffe15a99fca268c28d7c3e50e62e6aa5e9774cb656b		 pdf-javascript-stream PDF /JS object 97 at offset 0x169D6 55 bytes
stream_019_off00011d15.bin
d8895702a5f5c439139b3522c670ab44926a0abfafdcc9409cf90d68b0f3fb3f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11D15 37888 bytes
Detection
ClamAV: Win.Trojan.Rozena-131
Obfuscation or payload: unlikely
font_00_cff_off00008d95.bin
6c0b0b77ec8ca10be0fbf32c67b38b715e9347cd0657067586dc6a88a6927c0b		 pdf-font-stream PDF embedded font (cff) at offset 0x8D95 1220 bytes
font_01_cff_off0000925e.bin
5a73cc02fe30d156dab3da0ac03ff5f40497141a76379f18670c1fe5e2038204		 pdf-font-stream PDF embedded font (cff) at offset 0x925E 9296 bytes
font_02_cff_off0000ac33.bin
57ad650f09387a8dbcf13b80d200cb9d4e3e5ea4f2ed665314848f902bdb1bdd		 pdf-font-stream PDF embedded font (cff) at offset 0xAC33 280 bytes
font_03_sfnt_off0000ad91.bin
0e89d44f3a3355ae9b22238abbaa453b0e65df9e8e97a72059ac12b386d86f11		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD91 13112 bytes
font_04_cff_off0000c45f.bin
70028d071d54e5b05e3119ed7a0a5d86c696c6dd4fb4a703b9d3f7047a1f39b2		 pdf-font-stream PDF embedded font (cff) at offset 0xC45F 5262 bytes
font_05_cff_off0000d3a6.bin
05c683dd6fb190416d1a5064102e07cad3140243af257de408d12471cb8f71bf		 pdf-font-stream PDF embedded font (cff) at offset 0xD3A6 1350 bytes
font_06_cff_off0000d916.bin
13a817907b1f0a0fdebf28558e16352478ab7d8a438a06b9e7c91b2419cefa37		 pdf-font-stream PDF embedded font (cff) at offset 0xD916 4365 bytes
font_07_cff_off0000e591.bin
9a61b304e56e22121a8bb863f4fe7e5728a7aac730249442a685f154fef191fa		 pdf-font-stream PDF embedded font (cff) at offset 0xE591 6691 bytes

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