PDF malware analysis — malicious · 1cdc8926aff5b282

MALICIOUS

PDF

410.0 KB Created: 2003-09-08 14:17:54 +02:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 5.0 (Windows))

MD5: 16590a8380d7fbbf004101c584669159 SHA-1: 5f120cab8a156f6dbc3d9ed118f64f68cc52eb0b SHA-256: 1cdc8926aff5b2824d1927ca80041589e9092fe395b873d2e3758a990e6c9c16

122 Risk Score

Malware Insights

MITRE ATT&CK

T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF contains a critical PDF_LAUNCH heuristic firing, indicating an attempt to execute an external program. Specifically, it targets 'cmd.exe' with parameters that appear to be constructing a VBScript. This suggests the document is designed to download and execute a malicious payload. The embedded VBScript construction is the primary indicator of malicious intent.

Heuristics 4

Launch action critical PDF_LAUNCH

PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
/Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND

PDF /Launch action specifies an executable target with parameters '/c echo Dim BinaryStream > vbs1.vbs && echo Set BinaryStream = CreateObject("ADODB.Stream"' — references a known-dangerous executable (cmd, PowerShell, etc.).
Suspicious extracted artifact info 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://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/iX/1.0/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`icc_00_off00006b51.icc` `2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e`	pdf-icc-profile	PDF ICC profile at offset 0x6B51	3144 bytes
`font_00_cff_off000012df.bin` `9bcad1396bdd700a451896518a3916502cfc167a18029d605942f45815a84aa3`	pdf-font-stream	PDF embedded font (cff) at offset 0x12DF	3703 bytes
`font_01_cff_off00002316.bin` `10d8c99592b32a59f3fc48182e134bafd918bed4ba809614f4ae63a6033b5b44`	pdf-font-stream	PDF embedded font (cff) at offset 0x2316	4953 bytes
`font_02_cff_off00004a4c.bin` `bcc0f073e05d7e2a5771498ba18a22ce3f2ab16ca6e0289621707bd0406f4742`	pdf-font-stream	PDF embedded font (cff) at offset 0x4A4C	6428 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.41, consistent with packed or encrypted content.

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