PDF malware analysis — malicious · e25fda1e53141e5f

MALICIOUS

PDF

9.3 KB

MD5: a2f01b917310827dc343d7ab51fe3a9b SHA-1: 14f3778e6c97a3fccb4918b63cca3062582705d4 SHA-256: e25fda1e53141e5f395532a36e1e323a49951638d96633b7c83c973a527702d4

74 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file contains embedded script payloads and is flagged by a machine learning classifier as malicious. The presence of an embedded file object and an XFA form suggests an attempt to exploit PDF parsing mechanisms. The embedded URL, while seemingly benign, is present within the context of a malicious document, indicating a potential lure or part of a larger attack chain.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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 0xCF3	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0xDA5	1029 bytes
`embedded_file_obj0111.bin` `ddbd433bd6f3167c5689a507406a19e1b4b9a4e250739ad40687cc265e2d95c1`	pdf-embedded-file	PDF EmbeddedFile object 111 at offset 0xFBF	59130 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x1FD3	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2080	77 bytes

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