PDF malware analysis — malicious · 261231c81d61257f

MALICIOUS

PDF

5.2 KB Created: 2004-05-02 19:56:00 Authoring application: e

MD5: e7b4d290f6b6eb629edbd2e9e95bdb90 SHA-1: 123820ce3471ab1b371aba7afc878ce027b05073 SHA-256: 261231c81d61257fc058c74ef9529c20eac5e8f3d89edb73c9e4c5fb2b01097c

102 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an embedded JavaScript payload that exploits CVE-2010-0188 in Adobe Reader. The heuristic firings indicate an XFA form and an embedded script payload, strongly suggesting exploitation. The extracted JavaScript is likely responsible for downloading and executing a secondary payload, although its specific actions are obfuscated. The document body is not human-readable and appears to be malformed or encrypted.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00000361.js` `11742f053e36d2ac96da53350740d2ee630ac46d0c602990c3029ea41251817b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x361	52765 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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