PDF malware analysis — malicious · b0e8c9bad15425a6

MALICIOUS

PDF

26.0 KB

MD5: c4dafd849f1cb6b70e2208bf703a2f73 SHA-1: 897bd3e219117685b1cfeffff5abeda3680705b1 SHA-256: b0e8c9bad15425a6fb325d11f95fd316c173421c94f838d279214988a3fadb80

234 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document identified as malicious by multiple critical heuristics, including ML classification and ClamAV detection (Pdf.Exploit.Agent-36962). It contains embedded objects and an XFA form, suggesting an exploit attempt. The presence of an embedded URL, while seemingly benign, is noted in the context of the overall malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 0.9402

Heuristics 7

Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36962
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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 6

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 0x2694	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x2746	1029 bytes
`embedded_file_obj0043.bin` `41c4032785650b8101f0e286f9e77f992309a02fed3cb4f2f02d0276cdc69131`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x295F	1823 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x2D89	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2E35	77 bytes
`polyglot_child_pdf_off000033fc.pdf` `680f253e130df33f874f7bad00d239fef001f7a7cc72e3131920c81ac119e23b`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x33FC	13308 bytes
Detection ClamAV: Pdf.Exploit.Agent-36962 Obfuscation or payload: unlikely

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