PDF malware analysis — malicious · cc4006f7a8fc42bd

MALICIOUS

PDF

31.5 KB

MD5: e33839c445c2a21e3862af3290a0ca0c SHA-1: be81828a7e300fa42e21532406f67e6817f98eab SHA-256: cc4006f7a8fc42bd49f4ff8681e6e1597c38dca7c9e08282ad00f1240969114b

174 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

This PDF file contains XFA (XML Forms Architecture) content that leverages CVE-2010-0188, an exploit targeting LibTIFF within Adobe Reader. The embedded JavaScript, recovered as xfa_numeric_stage_000.js, acts as a stager, likely downloading and executing a second-stage payload. ClamAV also identified this as Js.Exploit.HTML-30, further indicating malicious JavaScript execution.

Heuristics 7

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
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.
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.
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-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xfa_numeric_stage_000.js` `ef033f6481d7ae87ae04d6ffb38632ce5c1d4af37e0b8008badd2bea1942af5e`	deobfuscated-js	XFA rawValue numeric decoded JavaScript (raw) at offset 0x3EA	3755 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).

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