PDF malware analysis — malicious · 2f2444f5161a287f

MALICIOUS

PDF

804 B

MD5: 4d7498d594a1534002fde377766d20a4 SHA-1: 85baefd1990a33e10869b80aff513afcce5da68e SHA-256: 2f2444f5161a287f4d068d92f9af676879700d061bdab46b193e6f3592551a12

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a launch action that executes cmd.exe, which in turn attempts to download a VBScript from http://ibombers.com/salaman/tmp/m.vbs. The embedded script payload is likely responsible for further execution or payload delivery. The reconstructed command line indicates the script will be saved as 'm.vbs' and executed.

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://ibombers.com/salaman/tmp/m.vbs

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_0000006f.bin` `ad55c8e83a5896a04b2012c676820daeab2b84cc539e444c6366e79f55a571c5`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x6F	63 bytes

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