PDF malware analysis — malicious · 225d267e6b53e2d7

MALICIOUS

PDF

9.3 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap

MD5: 421a0c685c6f696ce9dca3a30a839c98 SHA-1: 9d83979aff273e3c6ec017cf72038ff2baa081e2 SHA-256: 225d267e6b53e2d7a147d31759280de40e929e0ad1d74b97d1772278b06871d9

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Dropped-81, indicating it's a known exploit dropper. The PDF structure shows signs of exploitation with embedded files and XFA forms, commonly used to deliver secondary payloads. The lack of readable document body text and the nature of the ClamAV signature suggest the primary function is to exploit a vulnerability and download further malicious content.

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x10A7	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x1158	228 bytes
`embedded_file_obj0011.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x1C3A	199 bytes
`embedded_file_obj0012.bin` `d5c0be04c46ac1f7d523d955a6ab8aa50363e08076e63efedca0b5538dd14672`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x1D2C	131 bytes
`embedded_file_obj0013.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x1DEC	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x1E93	56 bytes

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