PDF malware analysis — malicious · 04a771429eb22a13

MALICIOUS

PDF

7.5 KB Created: 2011-03-09 19:13:10 Authoring application: now say

MD5: 437f1a695fcbfc8e4f4baab57574b26c SHA-1: e1149c314aad0cebb7bce3d7b7b5fe005a597bf8 SHA-256: 04a771429eb22a13ed8476c9f43a75d40f95dd52a87a58027d1e14bb05e0acdd

198 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document is malicious and exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The exploit targets the LibTIFF component within Adobe Reader's XFA processing. The document contains embedded scripts and an embedded file, indicating it's designed to download and execute a secondary payload. The ML classifier strongly supports the malicious verdict.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 8

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.
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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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
Embedded script payload in PDF stream low 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.
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://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/
- http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0006.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x925	84 bytes
`embedded_file_obj0012.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x9D7	228 bytes
`embedded_file_obj0018.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0xAC8	199 bytes
`embedded_file_obj0001.bin` `4f327053b704716b3d862a52da39a6b4e253159ccb24f1d92148104aec68e50e`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0xBB9	154 bytes
`embedded_file_obj0015.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xC8C	77 bytes
`embedded_file_obj0004.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0xD32	56 bytes
`embedded_file_obj0007.bin` `24a23d921ec71ea307df5310d427ba24d0077131f9dcbef7488c026d5c31cbe1`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x10B2	8779 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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