PDF malware analysis — malicious · c87c511f9b69f015

MALICIOUS

PDF

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

MD5: 41fbdbdf43a69238b9ab03a919057568 SHA-1: e82c83368b9fe76913d93891092da362bd66b57a SHA-256: c87c511f9b69f015ba8e86899d2940804cdbde41f89e609280e7a9f981b4ad03

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF file contains embedded executable scripts and is flagged by ClamAV as Pdf.Exploit.Dropped-81, indicating it's designed to exploit PDF vulnerabilities. The presence of XFA forms with risky executable scripts and eval() calls strongly suggests the execution of malicious code. While the exact payload is not directly visible, the embedded nature and exploit detection point to a downloader or dropper functionality.

Heuristics 8

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
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://ns.adobe.com/xtd/
- http://www.xfa.org/schema/xfa-data/1.0/
- http://ns.adobe.com/xfdf/
- http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xDB	67 bytes
`embedded_file_obj0009.bin` `38c81935ce11af5f7ac843faedee50e3f72f9fb62219a5761db7ba2d82e88742`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x167	65 bytes
`embedded_file_obj0010.bin` `cf0affc2e1012ec6c2cce6f06a8929d8c7111d72109cae6df644366f8fe1707e`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x1F3	772 bytes
`embedded_file_obj0011.bin` `8eb91c7296e026486f44e6036ba6863e1a91715ba7f7e64257febcf9314703e7`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x542	26772 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0012.bin` `103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x6E21	323 bytes
`embedded_file_obj0014.bin` `09422b3951a8ed3fa47161645ad8df159ad259b32d97aa07ee63ecd7803582aa`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x6FAE	164 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0015.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x7098	77 bytes
`embedded_file_obj0016.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x712C	56 bytes

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