PDF malware analysis — malicious · d638f6f74a2c0deb

MALICIOUS

PDF

14.7 KB

MD5: 321a909db20de178c6537184f9701b72 SHA-1: b995b5c076ec0fe8bb75d614c7d1b4b4e32946d4 SHA-256: d638f6f74a2c0deb4453d14b8458e8084f123dacedd798a4fb6b405948193736

114 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is identified as malicious by a critical ClamAV detection (Pdf.Exploit.Agent-36962) and a high-confidence ML classifier. Several PDF-specific heuristics indicate the presence of exploit code, including embedded files and an AcroForm button with an action trigger. The embedded URL, while seemingly benign, is associated with the exploit.

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 0x2D13	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x2DC5	1029 bytes
`embedded_file_obj0043.bin` `d7b1078c871b5402d0a1bed7271ae0b15e8240f45cfc731f390a1abe670415be`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x2FDE	1950 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x3474	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x3520	77 bytes

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