PDF malware analysis — malicious · b34574ad855918cc

MALICIOUS

PDF

47.4 KB Created: 2014-02-06 13:59:32 +01:00 Authoring application: Microsoft® Word 2010

MD5: 7c9733bfd71471c4d137e5d549d79f90 SHA-1: a4a298b19bcb3c523b0789f3e51fedaad69f1e0f SHA-256: b34574ad855918cce393ded9b211fb9a39d3fa03b94e26b61257d6d4ba88c255

424 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File T1059.003 Command and Scripting Interpreter: Windows Command Shell T1566.002 Phishing: Spearphishing Attachment T1105 Ingress Tool Transfer

This PDF file contains embedded JavaScript and a launch action that executes cmd.exe. The embedded executable payload is disguised as 'dokument.pdf' but is detected as a Windows executable. This indicates a dropper mechanism designed to execute a secondary payload, likely downloaded from a remote source, leveraging the CVE-2010-1240 vulnerability.

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\\dokument.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
Embedded attachment masquerades: declared document, content is windows-executable critical PDF_EMBEDDED_FILESPEC_CONTENT_MISMATCH

An /EmbeddedFile attachment's declared filename extension or /Subtype MIME type contradicts the magic bytes of its decompressed content. The attachment is declared as a benign document or image but the bytes are an executable or executable-bearing archive. This is a deliberate deception used to hide droppers in PDF attachments and is a generic indicator of embed-and-drop weaponisation, independent of any specific CVE.
ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
/Launch action paired with attachment-dropping JS API high PDF_LAUNCH_PLUS_DROPPER_JS

PDF combines a /Launch action with a JavaScript API call that writes or opens an attached/external resource — the canonical shape of the CVE-2010-1240 /Launch + exportDataObject family. Benign PDFs do not pair these surfaces; the combination indicates a drop-and-execute chain regardless of the specific JS API knobs or /Launch target.
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
`dokument.pdf` `96d28e189c67c9d86947d0a9c5a213d2245e7f9e59905d2a203e46b88582ce6b`	pdf-embedded-file	PDF EmbeddedFile object 20 at offset 0xC4A	73802 bytes
`javascript_obj0021_000.js` `724a37c707dfa84e9e83756b7628fd74d494f4e975e8c2ab40b6d31e6a7b17c7`	pdf-javascript-stream	PDF /JS object 21 at offset 0xB869	57 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.