PDF malware analysis — malicious · 2e50fce15a81b642

MALICIOUS

PDF

34.5 KB Created: 2010-02-04 21:45:28 UTC Authoring application: Writer (via OpenOffice.org 3.1)

MD5: 0ef3b0836533fde1aa64fe2d0884bff6 SHA-1: 3bcda77924fc500a3d84639651dbc01c0e6eee56 SHA-256: 2e50fce15a81b642a3307e0cc0328c297a02c0c379be4e00a3435c45c79c44c6

324 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The PDF file contains embedded JavaScript and a launch action that targets cmd.exe, indicating an attempt to execute arbitrary commands. The critical heuristic CVE_2010_1240 confirms this, specifically noting a chain involving a launch action, shell parameters, and an embedded executable payload. This suggests the file is designed to exploit a vulnerability to download and execute a secondary payload, likely a backdoor or trojan.

Heuristics 8

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\\test.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0018_000.js` `b1a09f919e0f5d1c1d284849c9af93bae6fd1411634dfdc491e126f9cd327f3f`	pdf-javascript-stream	PDF /JS object 18 at offset 0x8584	53 bytes
`stream_003_off00001f36.bin` `bb4ea62f5877802ce4511865d083b0c6c3c688f504f6a7bd17c6c1219fefa359`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1F36	87552 bytes

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