PDF malware analysis — malicious · 85d2fda89a7a0583

MALICIOUS

PDF

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

MD5: 1cc193df85f1844dcba02a037c55f42f SHA-1: 74c933d809456b9ab54c93f15365cee1bc080998 SHA-256: 85d2fda89a7a0583d70c6290a2cdd65667e7357f55384f6a6c4d46dcd36b9bff

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting the LibTIFF component within XFA forms. A JavaScript payload was extracted from a decompressed stream, indicating it's designed to execute malicious code. The extracted JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact function is obscured by obfuscation.

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` `ec0c4d4bbc7753bc4d23641e6032307bfd164d3b6ae1f28f2d6b6244c520c55f`	pdf-embedded-file	PDF EmbeddedFile object 29 at offset 0x35F	152 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`stream_003_off0000043f.js` `fbec66368b336fe4577605cc5ef1c3e68af110c84a4daf7e684fe28e0584deb7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x43F	52669 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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