Malicious PDF — malware analysis report

Static analysis result for SHA-256 be881998c1fb499a…

MALICIOUS

PDF

5.0 KB Created: 2003-03-03 59:56:01
MD5: 1446477f7e0da5e179544e84e3263e6f SHA-1: 945b363fd98d9d408e52738b301d00ea1ca28eae SHA-256: be881998c1fb499ad277f5f562d9e4214a86b5255e723d770151d4766558eeae
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

The PDF file contains an embedded JavaScript payload triggered by the CVE-2010-0188 exploit, which targets Adobe Reader. The extracted JavaScript file, stream_003_off000003a3.js, is likely responsible for downloading and executing a second-stage payload. The presence of XFA forms and embedded files further supports the malicious nature of this document.

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.

FilenameKindSourceSize
embedded_file_obj0029.bin
da59a89d289ed5940bc457b8de6713ed06bad685674148187e645f54bc0f5ca9
pdf-embedded-file PDF EmbeddedFile object 29 at offset 0x2B3 173 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
stream_003_off000003a3.js
33afe0bb0c345164cb09a05cd7ba37e22bc15f5eafc256b331c1bd2e0bd1f015
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A3 44135 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).