PDF malware analysis — malicious · e0a9eb97d2aa8be3

MALICIOUS

PDF

31.5 KB

MD5: 5aade86bb26a13683000ab6bfebc5b12 SHA-1: 51b5414a7d29afa21c324f8a0a64185c4b44e00a SHA-256: e0a9eb97d2aa8be36261b185f2ccf5b080af8e19a5e52a27c9ec39eb6b656531

270 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.007 JavaScript

This PDF file contains an XFA form that exploits CVE-2010-0188 in Adobe Reader. A JavaScript stager was recovered from the XFA form, which is likely responsible for downloading and executing a second-stage payload. The ClamAV detections (Js.Exploit.HTML-30 and Pdf.Exploit.Agent-36962) further confirm the malicious nature of this file.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Js.Exploit.HTML-30
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.
XFA numeric JavaScript stager high PDF_XFA_NUMERIC_JS_STAGER

PDF XFA script reconstructs a hidden JavaScript stage from numeric field data or a character table, then evals the result. The decoder is gated on XFA script, numeric staging, and recovered exploit-like JavaScript or shellcode markers.
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xfa_numeric_stage_000.js` `ae5366bf6df0d670583200b41c66269d1228f4d290398a077f34931dea5edf85`	deobfuscated-js	XFA rawValue numeric decoded JavaScript (raw) at offset 0x3F0	3759 bytes
Detection ClamAV: Pdf.Exploit.Agent-36962 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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