Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7b3ce6614c9ae6e…

MALICIOUS

PDF

811 B
MD5: a6ad4d171040645ef11dfd6b6d519f24 SHA-1: 5f56caf2c9c5c4c2b6365a464952b4e94b856978 SHA-256: e7b3ce6614c9ae6e804c370deca2708dbe4f2b7d99243cabb1216bdd8c281139
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File T1059.003 Command and Scripting Interpreter: Windows Command Shell T1105 Ingress Tool Transfer

The PDF document contains a launch action that executes cmd.exe. This command is used to echo a VBScript payload to a file named 'm.vbs'. The VBScript payload is then likely executed, which would download and run further malicious content from the embedded URL http://hsudsasodams.com/wp-content/tmp/m.vbs. The script construction is obfuscated, but the intent to download and execute is clear.

Heuristics 4

  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
  • /Launch action target: cmd high PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/c echo B="m.vbs":With CreateObject(StrReverse("PTTHLMX.2LMXSM"'.
  • 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://hsudsasodams.com/wp-content/tmp/m.vbs

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000006f.bin
ad55c8e83a5896a04b2012c676820daeab2b84cc539e444c6366e79f55a571c5
pdf-embedded-script PDF decompressed stream script payload at offset 0x6F 63 bytes