PDF malware analysis — malicious · f1db930754fb0759

MALICIOUS

PDF

5.0 KB Created: 2012-05-12 13:11:01 Authoring application: W6yY

MD5: 1e8862da90b3255a2820b20800ca652f SHA-1: ac45c2624454ac098f553916b9e7cd81604fef30 SHA-256: f1db930754fb075945ca7e99b5278499f6c40ae1c78bda726a4d528b6979de44

140 Risk Score

Malware Insights

The PDF file contains an embedded JavaScript payload that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic 'CVE_2010_0188' directly indicates this exploit. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although its exact function is obscured by obfuscation. The file's metadata and the presence of an embedded script further support its malicious nature.

Heuristics 7

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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_off00000319.js` `31a5a3b097606635a13429be28529497dee118626b745e4ade0d0a8670a0176c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x319	48213 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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