PDF malware analysis — malicious · 28fe794603ecc216

MALICIOUS

PDF

5.3 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob

MD5: b9dc3eae2cf1510b7e4c0c516d924593 SHA-1: 035c1ccedf1891e3315e7fecf5c69477d9b51c35 SHA-256: 28fe794603ecc21677ce6e2a73eb3e81c3323a6f963ba2d93ce1d089309f3d70

138 Risk Score

Malware Insights

The PDF file contains an embedded JavaScript payload that exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms. The script is designed to download and execute a second-stage payload. The presence of the exploit and the embedded script strongly indicate malicious intent.

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.
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
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_001_off00000327.js` `a4b40b776d2abae4c4e1a05b03b8c823c461281a74db44119ade64937700c591`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x327	49639 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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