PDF malware analysis — malicious · b39999a678e1e38c

MALICIOUS

PDF

5.3 KB Created: 2002-02-02 59:55:01 Authoring application: e

MD5: 95c1edaeeed988d8e12effa259e52a2e SHA-1: 8f68e3fbfb761f7ae4335ac84e9f76596f5cda1e SHA-256: b39999a678e1e38c1719a913b1ef0bd3f43b6b2cc7a19ff801b26e791458548b

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript

The file is a PDF document that contains an embedded JavaScript payload, identified by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The critical 'CVE_2010_0188' heuristic indicates that the document exploits a known vulnerability in Adobe Reader related to LibTIFF XFA images. The embedded JavaScript is likely responsible for executing the malicious payload after the exploit is triggered. No specific malware family was identified.

Heuristics 6

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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0029.bin` `e542e7b049cce1039f1167ff43679cf70856c5dd0be7f280d078ae545e2b0bd4`	pdf-embedded-file	PDF EmbeddedFile object 29 at offset 0x317	146 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`stream_003_off000003f5.js` `2f60f9aae17ba7fe161e3d2ffec1fa03c8903b1ec50fd941db810df69f36ce13`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3F5	52869 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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