PDF malware analysis — malicious · e9145b9043ca917d

MALICIOUS

PDF

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

MD5: 572c5a88748b8ade41fb08c287d18799 SHA-1: b49258ca91173766256b9122b7f3ef0c7faf2468 SHA-256: e9145b9043ca917d9cbf440018af33d82f09a5094ba01eb57d4452bcc9852cb8

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded scripts and is detected by ClamAV as Pdf.Exploit.Dropped-81, indicating it's designed to exploit a vulnerability and drop a payload. The presence of embedded files and XFA forms further supports this. The exact nature of the dropped payload is not discernible from the provided evidence, but the critical heuristic confirms malicious intent.

Heuristics 6

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
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 0xD7	67 bytes
`embedded_file_obj0009.bin` `e2e0f6c5cb2e0b2697da89386bfc3718eedaf1b6a2b1d24dd1176d27117bf77a`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x162	781 bytes
`embedded_file_obj0010.bin` `45c6313a70c534019cc5824825e927269c8e9e5955559ca35419268e1686932d`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x4BA	81 bytes
`embedded_file_obj0011.bin` `49b8c38b790602e858eae98d2addee8c6b98b09fbdc8768f8a3ab48bedda9b48`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x556	13825 bytes
`embedded_file_obj0012.bin` `103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x3BA2	323 bytes
`embedded_file_obj0014.bin` `9342db065cdcaf52cc1c03a167a9ee6da4adf7b601ac8728eb048874abd6ddf7`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x3D2F	161 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 0x3E16	77 bytes
`embedded_file_obj0016.bin` `78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x3EAA	68 bytes

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