PDF malware analysis — malicious · 7ef22e8f92091575

MALICIOUS

PDF

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

MD5: 6cb223e3eebed89407c3ce6286728c84 SHA-1: 72ee7c11237be1add3b575c112f5f9d5e779f7a0 SHA-256: 7ef22e8f92091575413043d1c633ba13dd20279bc82edb7bf85d6926dc0dc1b4

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded XFA forms with executable scripts, triggering critical heuristics for PDF exploits and ClamAV detection. The embedded script payload is likely designed to download and execute a second-stage payload, as indicated by the 'Pdf.Exploit.Dropped-81' ClamAV signature. The presence of embedded files further supports the malicious nature of this document.

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 7

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_obj0010.bin` `5f70b878e3d54dde19570d8a7ff0baeaff8a890ed05f630bed70eb78cbc4a245`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x168	779 bytes
`embedded_file_obj0011.bin` `e4cd72c45afcca7dfc9fea87b29181856120e7415a72ae1cc9abfe4288b0ce28`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x4BE	452 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 0x6CD	323 bytes
`embedded_file_obj0014.bin` `df63beb501d53c70e0cc98472f43dde1c4975097208a9e967db9dfd6f60f7840`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x85A	12079 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 0x37CF	77 bytes
`embedded_file_obj0016.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x3863	56 bytes

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