PDF malware analysis — malicious · 4b5f4895cc47781e

MALICIOUS

PDF

3.9 KB Authoring application: hXr (via va)

MD5: 8696460fbd2023803a46b5357b43a711 SHA-1: 651f30572dde42e03b0d6a1bd9a834dd2369a078 SHA-256: 4b5f4895cc47781edb2d34c0e5e6bae1c8b4491afb8653e0321c93ac6c6dcf4e

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is known to be used for arbitrary code execution, typically to download and run additional malicious content. The embedded file and script payload markers further indicate a malicious intent to deliver a secondary payload.

Heuristics 5

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
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
`embedded_file_obj0041.bin` `b91d44f6ee47d5957c37ad7c33daa82854e1b915c88f4a910ef655d3d953506f`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x53	9941 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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