PDF malware analysis — malicious · 4b5218746ac3e8da

MALICIOUS

PDF

225.3 KB

MD5: 9fe4ea79f4436150bb95811d63f647db SHA-1: 3784c976c5d4901b11c23ee8a84dc9be5b534b44 SHA-256: 4b5218746ac3e8da5c28da54492b0178b8a93a6d5673029cdc0e2cb76ad99371

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF file that contains an embedded XFA form with a critical heuristic indicating exploitation of CVE-2010-0188. This vulnerability in Adobe Reader allows for arbitrary code execution. The embedded file suggests a secondary payload is likely delivered. The lack of readable document body text prevents a more specific determination of the lure, but the exploit itself is the primary indicator of malicious intent.

Heuristics 4

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.
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: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `8f7678caa46ed8f9242b0b166d9ddc87436b3929ce8caca98d67e3806b3591f3`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x54	412562 bytes

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