PDF malware analysis — malicious · ec9226370f22c76b

MALICIOUS

PDF

12.0 KB

MD5: d799d205cd7fa5d59d720b2e8cb1797d SHA-1: 8935d375698486fbd429b7c7b4753e4027e60de7 SHA-256: ec9226370f22c76bd16b6195ee10907e531d90c90458b246c84f4ae8ad6a5e4a

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF exhibits multiple indicators of maliciousness, including the use of ASCIIHexDecode filters with exploit indicators and a high ML classifier score. ClamAV detection as 'Pdf.Exploit.Dropped-90' strongly suggests it's a dropper for further malicious content. The embedded file further supports the payload delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-90 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-90
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
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` `2b220e7c7922cdb0e06d3bc506771cd3119e123af9cb44c816676a88d109c60b`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x5A	1875 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.