PDF malware analysis — malicious · 000a8037240a1f2a

MALICIOUS

PDF

9.6 KB

MD5: 6918265f7dbabd567ad6728af3152a71 SHA-1: 3d2cb2d08ba7de0127526a6dfe6be50931cf31bd SHA-256: 000a8037240a1f2a9d1eb0a1a404493dac59dd08dbd3e30fcceae0a3cacf703a

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The critical heuristic firing confirms this exploit. Deobfuscated JavaScript was extracted, indicating the execution of malicious code. This script likely downloads and executes a second-stage payload, although the full URL is not explicitly reconstructed due to obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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 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
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://www.xfa.org/schema/xfa-locale-set/2.1/
- http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.2/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 7

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 0x109C	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x114E	1029 bytes
`embedded_file_obj0063.bin` `922af6918e80afb1f48906fa59224536cd9071f1e3d132b73e23aea4b321eaf2`	pdf-embedded-file	PDF EmbeddedFile object 63 at offset 0x1367	8300 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x2364	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2411	77 bytes
`xfa_base26_stage_000.js` `d8d3ec5f47d325a68c42d6909eb045895d79b4aacc4c4f8180318a569d1f0119`	deobfuscated-js	XFA base-26 decoded JavaScript (decompressed) at offset 0x17B6	2146 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).
`deobfuscated.js` `a6cb6b6a46dea22fc021c87efc82dbaa115a57153a510251e748f0e19b206cb4`	deobfuscated-js	PDF JavaScript deobfuscation pass	22409 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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