PDF malware analysis — malicious · aac4e02aae2d1410

MALICIOUS

PDF

5.6 KB Created: 2012-06-11 17:19:01 Authoring application: arcare godgoo

MD5: 73f5e160f29d64375a11bdaade6e4c38 SHA-1: 4617360367b8150e0c8d1d3d510841c343465970 SHA-256: aac4e02aae2d141000ca0d7105e5a32185ea52d9e5672121ec74b80182d22360

220 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms, to execute a malicious JavaScript payload. The extracted JavaScript file, stream_002_off00000336.js, is identified by ClamAV as Html.Malware.Agent-7659162-0, indicating it likely serves as a downloader or dropper for further malicious activity. The embedded nature of the exploit and script points to a delivery mechanism designed to compromise the user's system upon opening the PDF.

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: Html.Malware.Agent-7659162-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Html.Malware.Agent-7659162-0
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00000336.js` `f1238eaac9c8a73d0365c549dbd4a20ae0e55c0b02cb6d824330d95121aba507`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x336	89447 bytes
Detection ClamAV: Html.Malware.Agent-7659162-0 Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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