PDF malware analysis — malicious · 87951bf1eca0000e

MALICIOUS

PDF

9.8 KB

MD5: 2a8dfd6940c12ccd9c6e3cb4b9607c80 SHA-1: 2d12cc7255fffc63226bd4dd5b75e6c2c0e2a96c SHA-256: 87951bf1eca0000e0e64f5a7b4a20fec6f6f58468e6834fc177b2c3ee9fb854a

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1559.001 Component Object Model Hijacking T1059.001 PowerShell

The PDF file contains an embedded exploit targeting CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms. The heuristic firings indicate the presence of an embedded script payload within a decompressed stream, which is likely responsible for executing the exploit. The embedded URL, while not directly malicious in reputation, is part of the XFA form structure that facilitates the exploit.

Heuristics 6

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
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
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0041.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0xE8A	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0xF3C	1029 bytes
`embedded_file_obj0111.bin` `b6f9bdb50b9bcbd25947bfca901a14cbdca0b915c38e0d0eff17bc78ad1f3af9`	pdf-embedded-file	PDF EmbeddedFile object 111 at offset 0x1156	60926 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x21A3	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2250	77 bytes

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