MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ClamAV and an ML classifier, with high-severity heuristics indicating embedded JavaScript and a link to an algorithmically generated URL. The PDF appears to function as a link farm, directing users to numerous other PDF files hosted on disposable domains, suggesting a phishing or malware distribution campaign. No specific family was identified.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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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://sinosteelcode.com/filespath/files/20210904165239.pdf In PDF document text
- http://7m-shop.com/userfiles/file/97720393533.pdfIn PDF document text
- https://hunghiephuylog.com/upload/files/gabuxerefaxituxotuzi.pdfIn PDF document text
- https://surupaceanu.ro/ckfinder/userfiles/files/filexevuwelapufo.pdfIn PDF document text
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16145c0f0a51d8---52797648585.pdfIn PDF document text
- http://goldendoodlesofthesierranevadas.com/userfiles/file/givewasabewik.pdfIn PDF document text
- http://izeninfo.net/admin/upload/files/52835396523.pdfIn PDF document text
- http://bnblspecialities.com/userfiles/files/tepanepal.pdfIn PDF document text
- https://lexconsulting.ro/webroot/files/media/jesumisukasu.pdfIn PDF document text
- http://kepco-group.com/uploaded_files/userfiles/files/38800815361.pdfIn PDF document text
- http://fli.edu.mn/ckfinder/userfiles/files/faxurifogerepenirezek.pdfIn PDF document text
- https://zlato-stribro-investice.com/upload/files/wekarusagigetasawarofapeb.pdfIn PDF document text
- https://bongkartuantakur.com/contents/files/32659640570.pdfIn PDF document text
- http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/xupofoja.pdfIn PDF document text
- http://www.companyforte.com/imagenes/editor/file/1594753752.pdfIn PDF document text
- https://avukatwebsitesi.kocgrafik.net/upload/files/92778963902.pdfIn PDF document text
- https://mbamantra.com/ci/userfiles/files/25335089207.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161354bff0607e---87961544319.pdfIn PDF document text
- https://francois-daulte.com/ckfinder/userfiles/files/linawovegemetimabisa.pdfIn PDF document text
- http://capri.lt/userfiles/files/22627999289.pdfIn PDF document text
- http://alphasigmaoverseas.com/userfiles/file/96862808944.pdfIn PDF document text
- http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/36508186085.pdfIn PDF document text
- http://cmi.nfe.go.th/ckfinder/userfiles/files/22619394118.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=geolayers+3+crackPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e9ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9CA | 10344 bytes |
SHA-256: f76e90ec19354d01f8e0b6597db6938ae3c34653a5d0441d22781fcc3a02f8dd |
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font_01_sfnt_off00010168.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10168 | 16732 bytes |
SHA-256: b96010b9665b36c77021af0de07f8cdc970aa7db47f423ae5ac8c940891c0888 |
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font_02_sfnt_off00012cde.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12CDE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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