MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous links pointing to potentially compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body was unreadable, but the heuristics and URLs strongly indicate a malicious intent to exploit user interaction with embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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 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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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://queure.ru/uplcv?utm_term=signals+and+systems+roberts+2nd+edition+solution+pdf PDF link annotation
- https://irish-setter-zucht.info/ckfinder/userfiles/files/85696375295.pdfIn PDF document text
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a74c12907f1---75527497508.pdfIn PDF document text
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093cbc5ba08f---sidejovilikalove.pdfIn PDF document text
- http://grimastone.ru/files/fisevemuv.pdfIn PDF document text
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/eqauhtcl35vcfskpmtqgca2urn/nivogalu.pdfIn PDF document text
- https://hbphoto.ca/resimler/files/97538527243.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098911750d0c---57016944948.pdfIn PDF document text
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc727975b6---terukudoduzegikuvimo.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927a60deadb---ginusilulu.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/5d4jr4g2i5ju8hk6b7046qosv7/46374294246.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/g7vn751f0crm52466l6s86d11g/wobokosar.pdfIn PDF document text
- http://maekuangudomthara.com/ckfinder/userfiles/files/wiridexijupipuk.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc8df1feaa---xukewofunogewomijozijate.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/d7ee275a75b6b5b8b18e43c95ba9046b/wejajapuzulup.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b619cae6cfa---rorili.pdfIn PDF document text
- http://duepassidalcentro.it/userfiles/files/74276784789.pdfIn PDF document text
- http://creatinglifeoptions.com/userfiles/files/vadabujekobimagubudi.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/2c6d6527abe2ae30e4bae186135094ab/bowotepedox.pdfIn PDF document text
- http://colescastle.com/clients/875019/File/kigeroduditunixa.pdfIn PDF document text
- http://qianxish.com/ckfind_image/files/depaxadoxanu.pdfIn PDF document text
- http://china-hold.com/UploadFile/file/20210517083214833.pdfIn PDF document text
- http://teakdeck.pl/files/file/xofawozadepep.pdfIn PDF document text
- http://a-swiss.com/upload/userfiles/file/fuzokuluzozep.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_off0000baf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBAF8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d30a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD30A | 16392 bytes |
SHA-256: 97ead97db046c370bdbaf03b9a636a9afb40f04045fc8a3828adc7d0fbc43bc5 |
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font_02_sfnt_off0000fdf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDF5 | 11388 bytes |
SHA-256: 2c808ff6ec93349e712705ca3beebfd7e08c56558674116bb8fdff3692f15e5f |
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