PDF malware analysis — malicious · 4161b9a99e5fcea3

MALICIOUS

PDF

9.5 KB

MD5: 9fe51bbb958c5cdccc18c7927cce69aa SHA-1: a748002f4e754fcdbf2f0cce82a34aec43589b2e SHA-256: 4161b9a99e5fcea358da6211ef3805ba966e7e1825c82e8321c931e035d69869

104 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1204.001 Malicious File: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF file contains an embedded XFA form that exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of LibTIFF images. This exploit is designed to decompress and execute a payload from an embedded stream. The presence of an embedded script payload further supports the likelihood of malicious code execution. The embedded URL is likely part of the exploit chain or a lure.

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 0xE68	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0xF1A	1029 bytes
`embedded_file_obj0111.bin` `1319966cb815f2f529299a299b1c20e145e37dee400b94adc24d8dd1713190d3`	pdf-embedded-file	PDF EmbeddedFile object 111 at offset 0x1134	57976 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x20B4	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2161	77 bytes

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