Js.Trojan.Agent-36967 — PDF malware analysis

Static analysis result for SHA-256 2634227f7e4eee2e…

MALICIOUS

PDF

9.6 KB
MD5: 4e23698416781ee2687044d1a5ca87a8 SHA-1: 8b5e31ada53edc6456e25375787969961baed254 SHA-256: 2634227f7e4eee2e99e58d1c746c817e072e4ae51ff5919e30ac113c0d5c4837
264 Risk Score

Malware Insights

Js.Trojan.Agent-36967 · confidence 95%

MITRE ATT&CK
T1204.001 Malicious Link/Object: User Execution: Malicious Link T1204.002 Malicious Link/Object: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF exploits CVE-2010-0188 via an XFA form, which is a critical finding. ClamAV detections confirm the presence of a JavaScript Trojan (Js.Trojan.Agent-36967). The embedded script payload likely downloads and executes a second-stage payload, leveraging the exploit to achieve code execution.

Heuristics 9

  • 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.
  • ClamAV: Js.Trojan.Agent-36967 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Trojan.Agent-36967
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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.

FilenameKindSourceSize
embedded_file_obj0041.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 41 at offset 0xE61 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0xF13 1029 bytes
embedded_file_obj0111.bin
75a4b3956c3c47e0f9c7cbffd38e102aa01a38de2ecad0879cf30f6563221de5		 pdf-embedded-file PDF EmbeddedFile object 111 at offset 0x112D 52679 bytes
Detection
ClamAV: Js.Trojan.Agent-36967
Obfuscation or payload: unlikely
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x20FA 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x21A7 77 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.