PDF malware analysis — malicious · 39bc55fb014233aa

MALICIOUS

PDF

5.2 KB Created: 2011-06-11 17:19:01 Authoring application: q50

MD5: 8854176929f833aaf72382adce6ef3ee SHA-1: 954b284a208bd3249af07e3d471f18fee1c43a7a SHA-256: 39bc55fb014233aabd698f09f6a26548cb0e10f756a90bbc4780b9879f7b1a46

100 Risk Score

Malware Insights

The PDF file contains an embedded JavaScript payload that is triggered by the CVE-2010-0188 exploit, targeting Adobe Reader. This exploit allows for the execution of arbitrary code, in this case, the embedded JavaScript. The JavaScript is likely responsible for downloading and executing a second-stage payload, although its exact function is obscured by obfuscation. The presence of the CVE-2010-0188 exploit and the embedded script strongly indicate a malicious intent to compromise the user's system.

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_001_off00000306.js` `9e872c52d8d792d1047e3fc28a421b0ba2513ce267ee22df723f0c07d5d618f0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x306	65154 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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