PDF malware analysis — malicious · af6b738a36e1248d

MALICIOUS

PDF

15.0 KB

MD5: 60aad4817b936225b5896bbdd891bd8c SHA-1: 529a66d55195ee59587d98c11ca2bef6e52e18a0 SHA-256: af6b738a36e1248d677df203f5518c72f6732e9a9fa3cd0d52da55bb3c926c17

204 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a critical vulnerability exploit for CVE-2010-0188, targeting Adobe Reader's XFA functionality. Heuristics indicate the presence of obfuscated JavaScript and embedded files, suggesting a multi-stage attack. The deobfuscated JavaScript likely downloads and executes a secondary payload, as indicated by the 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic. The embedded URL is likely part of the exploit chain.

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.
ClamAV: Pdf.Exploit.Agent-36928 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36928
Suspicious extracted artifact high 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.
String.fromCharCode medium PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically (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
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 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 0x2D6F	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x2E21	1029 bytes
`embedded_file_obj0043.bin` `2b7898f7e26e532af466b7ffabf2df8e3d9ed0047660a5db821f5ee0996adb1b`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x303A	1632 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x33E6	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x3492	77 bytes
`xfa_metadata_stage_000.js` `4a7e0403ed392ad3241ae2457e555b77a0db7ce2becd8a45852a009150f90bb7`	deobfuscated-js	XFA /keywords base-28 decoded JavaScript (raw) at offset 0x128A	2181 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` `3440d3e1329667858bd023ad9686ffe34f53022d88e7efd3cbcb04ad29a2be7a`	deobfuscated-js	PDF JavaScript deobfuscation pass	13411 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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