PDF malware analysis — malicious · f537e7ca9fff8d2d

MALICIOUS

PDF

17.6 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap

MD5: c387b9f63e58e6182e1f6839c66a1866 SHA-1: 9f8708fd355336fefcc36b609addbd9fee4a4ffd SHA-256: f537e7ca9fff8d2d6da20a8dae7cbcefb45907abeaddfc884d6efbda2f091c51

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF file contains a high-severity heuristic firing for XFA form with risky executable script, indicating it's designed to exploit vulnerabilities. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded script likely downloads and executes a second-stage payload, leveraging the PDF's structure for delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 6

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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://ns.adobe.com/xdp/

Extracted artifacts 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x13E	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x1ED	228 bytes
`embedded_file_obj0010.bin` `3a2deb548e60d0e9c68103129ab3f9a8e59e32796b3d5a5d5a64b4e32e2e7e4a`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x2E0	1348 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x618	199 bytes
`embedded_file_obj0012.bin` `573d45083305f3fd29ef9d79bd13e90867aa2bd387dc37db270b73f307c1af11`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x70A	34283 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x419D	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4244	56 bytes

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