Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f65d780dd3f4603…

MALICIOUS

PDF

67.5 KB Created: 2010-08-27 16:33:28 -03:00 Authoring application: PDFCreator Version 0.9.5 (via GPL Ghostscript 8.61)
MD5: 2a2f11aa613ee7a901cf7e19fe9485ea SHA-1: 8af9a32d3454220d643351a3c6805a6789a2a93d SHA-256: 1f65d780dd3f460379321ce1f533fce6098bdd585863c6d01613dcb0b5d98659
324 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

This PDF file contains a critical PDF_LAUNCH_COMMAND heuristic firing indicating that cmd.exe is executed with specific parameters. This execution is chained with an embedded PE payload, as indicated by the PDF_EMBEDDED_PE_PAYLOAD heuristic. The CVE_2010_1240 technique is specifically matched, confirming the exploit of a launch action for command execution. The embedded executable payload is the primary malicious artifact, likely intended to further compromise the system.

Heuristics 9

  • 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 (if exist "%HOMEPATH%\\My Documents\\100820310.pdf" (cd "%HOMEPATH%\\My Documents"' — 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
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0035_000.js
ccc245dddf89c293679e1dd27f7f7ed8fead0ee5568de39f4396d6f95ae968ba		 pdf-javascript-stream PDF /JS object 35 at offset 0x10948 58 bytes
stream_004_off0000487a.bin
3434711f6f1f0188a5ccdc29876bf50388c158d7dcbb426e00add03cc0aefdef		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487A 38248 bytes
stream_007_off00010745.bin
1c3eb8f1586bf6091115bb86949d696cca6f2c564a3dfce5c191cf5844062af0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10745 2048 bytes
font_00_sfnt_off0000230f.bin
8dd71f2ab5f9c84a493a3b894618bbc71ab7e5ef292226227a9a9853b4f0cddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x230F 19156 bytes
font_02_sfnt_off0000a787.bin
58d0863f7d84fda8553561d45fef2fdb0114ff487cde5224ca5d5b1fb09f2ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA787 26140 bytes
font_03_sfnt_off0000e711.bin
1b31c4237d3b0c1b0ee9d40c9b895e821d0160ee357a0c87e30bba9db72743ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE711 11744 bytes

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