MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, including links to compromised CMS upload storage and disposable hosting. These elements suggest the document is part of a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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 https://synerhu.ru/uplcv?utm_term=catalyst+used+in+manufacturing+ammonia PDF link annotation
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/3a37244a9316aa1c98c2078c0b3b085a/22767711119.pdfIn PDF document text
- https://www.scmsgroup.org/ckfinder/userfiles/files/69408919777.pdfIn PDF document text
- http://digitalpolicycouncil.com/imagenes/file/42676712900.pdfIn PDF document text
- http://vhshf.de/File/kibekavugak.pdfIn PDF document text
- https://chilegastronomia.cl/uploads/userfiles/files/wafof.pdfIn PDF document text
- https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/eb8b93d5715b78a2fb131532c5f91873/61103939251.pdfIn PDF document text
- http://imhyuk.com/imhyukeditor/userfile/file/26129287808.pdfIn PDF document text
- http://cesishotel.com/res/wysiwyg/file/siwusosumiwumanenarezax.pdfIn PDF document text
- http://se-ty.ru/uploads/userfiles/file/13542369615.pdfIn PDF document text
- https://danielstrehlau.com/userfiles/file/giximewulinu.pdfIn PDF document text
- https://profesa.net/userFilesfile/71578525695.pdfIn PDF document text
- https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/sokanilorevigusimag.pdfIn PDF document text
- http://luatminhnghia.com/img/files/91962274227.pdfIn PDF document text
- https://octvads.site/js/ckfinder/userfiles/files/voduxazamejesawezin.pdfIn PDF document text
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/hr3p7uv5jp788rg7akrm2ir8qu/roxejovuvopu.pdfIn PDF document text
- http://optimumnieruchomosci.pl/uploads/userfiles/files/75015328773.pdfIn PDF document text
- https://dawnraytech.985.tw/data/file/userfiles/files/37234954932.pdfIn PDF document text
- http://ingore.cn/upload/files/20745888053.pdfIn PDF document text
- http://dabaizhongxue.com/upload_fck/file/2021-10-16/20211016115309778364.pdfIn PDF document text
- https://www.aspart.ro/ckfinder/userfiles/files/tebunu.pdfIn PDF document text
- http://hotelalbicia.com/userfiles/file/gutotubulimilojexep.pdfIn PDF document text
- 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_off0000cd2e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD2E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e545.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE545 | 11064 bytes |
SHA-256: f60cc5448e3c1bfb11d8c19133323cd550f9a5c5a18bc680fdd24726e32921ca |
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font_02_sfnt_off0000fed9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFED9 | 19440 bytes |
SHA-256: 245068bd223b937ab6d2f5fbffdb1530810713a79ee30774dade615e162db892 |
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