MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. Several heuristics indicate the PDF is part of a link farm, pointing to external URLs hosted on potentially compromised websites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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 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 http://www.ez4parcel.net/upfile/files/2021/09/08/miwiniguxefosexowodud.pdf In PDF document text
- https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/75477829909.pdfIn PDF document text
- http://cicm2015.mist.ac.bd/app/webroot/ckfinder/userfiles/files/28284661633.pdfIn PDF document text
- https://coolinterier.sk/upload/files/zexamofexazesedafarafi.pdfIn PDF document text
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d24a4643f7---noxepuvogepedire.pdfIn PDF document text
- http://xhslsh.gdx.cn/ckfinder/userfiles/files/fuduvubixuzajetokadutaxif.pdfIn PDF document text
- http://abwwilson.com/uploads/files/gedagiladesuvufesen.pdfIn PDF document text
- https://e-casainteligenta.ro/userfiles/file/wufojaxolirazumurozubisos.pdfIn PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614d3d8b212d4---67507113270.pdfIn PDF document text
- http://szybkieprawko.pl/szybkieprawko.pl/user/admin/fck/file/suzotirofitototuxinux.pdfIn PDF document text
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc2132992d---45739457154.pdfIn PDF document text
- http://sz-frp.com/pic/20210920201827516.pdfIn PDF document text
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/f797ab10674398ea718da3b568b52325/15083816691.pdfIn PDF document text
- https://aymexco.ro/ckfinder/userfiles/files/nugazamisevubo.pdfIn PDF document text
- http://gurgaontaxi.com/pa/trainstation/uploads/image/file/kotilanolefamejev.pdfIn PDF document text
- http://sincaremedicaltour.com/js/upload/59005428823.pdfIn PDF document text
- https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/8688cb154df8f4e54c4e4b119fea7415/60378652032.pdfIn PDF document text
- http://gdlejia.com/uploadfile/files/20210909_052322.pdfIn PDF document text
- http://zzzwchem.com/upload/files/nenefumegozatemup.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=el+mundo+amarillo+pdfPDF 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_off0000da4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA4C | 10344 bytes |
SHA-256: 166cf490373d5127878c05776d9a4c184ca7f302b6d5fb8dccef2a7ce0c71a45 |
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font_01_sfnt_off0000f16d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF16D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001097f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1097F | 19588 bytes |
SHA-256: f56a7c1b76baab140ed80d670103914d12582080a0f6edafe7d235b991465813 |
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