PDF malware analysis — malicious · cf9b2eb736aef8b4

MALICIOUS

PDF

14.2 KB

MD5: 2d7df3e176eb20be8538f59c3db2b7c8 SHA-1: 55bb8916d4f5286cd36e4c4e18320f13c6e2ce94 SHA-256: cf9b2eb736aef8b4d8647904de3823e465c3aa76e6547b9faa00656016e57b5e

114 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1566.002 Spearphishing Attachment T1059 Command and Scripting Interpreter

The critical ClamAV detection and ML classifier firing strongly indicate malicious intent. The PDF contains embedded files and an XFA form, suggesting it's designed to exploit vulnerabilities or trick the user into executing a payload. The embedded URL is likely part of the exploit chain.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36962
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
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0041.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x2AE3	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x2B95	1029 bytes
`embedded_file_obj0043.bin` `d7b1078c871b5402d0a1bed7271ae0b15e8240f45cfc731f390a1abe670415be`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x2DAE	1950 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x3244	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x32F0	77 bytes

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