MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-36962. It contains an XFA form with executable script content, indicating an attempt to exploit PDF vulnerabilities. The presence of embedded files and script payloads strongly suggests that this document is designed to download and execute a secondary malicious payload on the victim's system.
Heuristics 9
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XFA form contains risky executable script high PDF_XFA_SCRIPTPDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
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ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36962
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Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOADPDF 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.
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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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String.fromCharCode low PDF_FROMCHARCODEString.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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AcroForm button with action trigger low PDF_ACROFORM_BUTTONPDF 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
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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Embedded URL info EMBEDDED_URLOne 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.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
Extracted artifacts 6
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0041.binc06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb |
pdf-embedded-file | PDF EmbeddedFile object 41 at offset 0x3970 | 85 bytes |
embedded_file_obj0042.binb40a217a8d9b8d3671cc3874c550d30941b93ca6dde99995d43921dede579865 |
pdf-embedded-file | PDF EmbeddedFile object 42 at offset 0x3A22 | 1183 bytes |
embedded_file_obj0043.binb8345e96e51b9cdda5105a7bf95d7ea14524c8ce94d94e98b21038e41fc7bbc1 |
pdf-embedded-file | PDF EmbeddedFile object 43 at offset 0x3C74 | 2852 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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embedded_file_obj0044.bin3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169 |
pdf-embedded-file | PDF EmbeddedFile object 44 at offset 0x4211 | 144 bytes |
embedded_file_obj0045.bince4a3f07835c725838e55947d6b1f21771e0ad8084ee86d0890ecc12bd5231fd |
pdf-embedded-file | PDF EmbeddedFile object 45 at offset 0x42D3 | 2427 bytes |
font_00_cff_off000046a3.bin062eede2d0cc5d3972869dc7e2f2f9f01d1d1b3756b715c8252f06948ce99ae2 |
pdf-font-stream | PDF embedded font (cff) at offset 0x46A3 | 1192 bytes |
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