PDF malware analysis — malicious · 5a2423320c8a2608

MALICIOUS

PDF

4.4 KB

MD5: 39e1148f8c62a1626a9c3523c15f3e9f SHA-1: 17ad385297d1ea567e8ad148527a9010c3925d8e SHA-256: 5a2423320c8a2608f8bb29a4c6499cb39388fd7eebddc3fd1a84b69cc8fec230

98 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The PDF file contains an XFA form and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of a vulnerability in Adobe Reader related to LibTIFF and XFA images. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests obfuscation of the exploit payload. The extracted file 'stream_000_off000001f9.bin' is likely the decompressed exploit code.

Heuristics 5

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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_000_off000001f9.bin` `7bb6632cd2dba68fb1d58bc316a30075b43223a38c6a3f8b4397ecf8babf5806`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1F9	13469 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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