PDF malware analysis — malicious · 37ac3296236742aa

MALICIOUS

PDF

2.2 KB

MD5: a79fc9ef450b294f3602b09d1124fcf9 SHA-1: c469e3497fa4631cf35acde3ebc0fd8f3e95b11a SHA-256: 37ac3296236742aa9c5fc37062ef12ff55a07cb732ce359289e075fad7b3fb1f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.003 Windows Command Shell

The PDF file contains an embedded script that is configured to launch cmd.exe. The script also attempts to download a file from http://127.0.0.1/calc1.exe, likely to execute a second-stage payload. The presence of a launch action targeting cmd.exe and an embedded script strongly suggests an attempt to execute arbitrary code.

Heuristics 5

/Launch action target: "cmd.exe" critical PDF_LAUNCH_COMMAND

PDF /Launch action specifies an executable target — references a known-dangerous executable (cmd, PowerShell, etc.).
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.
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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://127.0.0.1/calc1.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_0000012b.bin` `d2ec2e802720417ce10bbaf80c364cf5e60e14144210e3e28122ba86a6868d11`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x12B	329 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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