PDF malware analysis — malicious · 4322130ecaa9a432

MALICIOUS

PDF

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

MD5: b89a9bb5b991c44c56ecc03724ebd19e SHA-1: 776e3ded31783881af500aedd314928f7f1d8961 SHA-256: 4322130ecaa9a43288922bc71305a41552f2490e3b74f45f735c463f6be58ce6

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 sample is a PDF file that contains an embedded JavaScript payload, identified by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The 'CVE_2010_0188' heuristic indicates that the PDF exploits a known vulnerability in Adobe Reader. The embedded JavaScript, named 'stream_003_off0000039c.js', is likely responsible for executing the malicious payload after the exploit is triggered. The document body contains obfuscated text, suggesting an attempt to hide the malicious nature of the file.

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` `deb4ac5f70315ea6219ea751300b3d1848ad393bb5e957e29fbce82e649727d1`	pdf-embedded-file	PDF EmbeddedFile object 29 at offset 0x2F4	80 bytes
`stream_003_off0000039c.js` `8a94e485ff1911f51add3cc371c0d4bac5f2f488504b14894fbdc13331f71c75`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x39C	53103 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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