MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of embedded URLs and the nature of the heuristics indicate an attempt to trick users into downloading further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
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://oniceh.ru/uplcv?utm_term=harvard+business+review+books+free+download+pdf PDF link annotation
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/b6d9dda40e459ee3f4e5d5ccf41f5a81/83322299217.pdfIn PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2bb7723328---65473067103.pdfIn PDF document text
- https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/409fddcaf93dedcb69148d62df7ed63e/52688084554.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608628bbc87a6---83566513051.pdfIn PDF document text
- https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/b24add332805c2deb35c7a46e4b672fe/fotafizijemojifaji.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160c3504d7afe6---66808338709.pdfIn PDF document text
- http://cnc-soustruzeni.cz/files/file/zagomovazuwom.pdfIn PDF document text
- https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/036mtf3q97jieunvnnomlkc9o9/zimipavutefupebotep.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082acf873b28---34919120116.pdfIn PDF document text
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e40a485ccf2b20e626aff8b91db32d11/megelap.pdfIn PDF document text
- http://almar-bus.pl/userfiles/file/9141551533.pdfIn PDF document text
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5aec45bad---72959806161.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ca138125541---larasovesatizige.pdfIn PDF document text
- https://frontlinetherapist.com/wp-content/plugins/super-forms/uploads/php/files/69e0712a899560050d99ddb8594d163b/lukoxefuwigegetutosoguxo.pdfIn PDF document text
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f30c62ff1f---81118460210.pdfIn PDF document text
- https://songhong-thudo.com/img/files/sugoxo.pdfIn PDF document text
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/8f1f969d4f1e66b962c700f215ba46b4/xukevumunov.pdfIn PDF document text
- https://genia-groupe.fr/images/files/21503604691.pdfIn PDF document text
- http://michellesmithscott.com/clients/36670/File/ruvotedidorofepixisanas.pdfIn PDF document text
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c78a8044f7---relitegejikonafazibow.pdfIn PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b81de77dd---57278381818.pdfIn PDF document text
- http://tischlerei-schlusche.de/sites/default/files/file/93879147771.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8b37893ce---35097955908.pdfIn PDF document text
- http://greenplanetnepal.com/userfiles/file/54387979488.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7e75e9271edfc1e6c80fe278ec652c86/56900688806.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_off0000c711.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC711 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000df23.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF23 | 17152 bytes |
SHA-256: c6856bc5fa4b5f301a094cd5e9610235bd9bb54e63d93c31c14b4cb28acf6e4d |
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font_02_sfnt_off00010b82.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B82 | 10868 bytes |
SHA-256: f27b9ebe71fa8035ebcf7fb9678b497c483d6b52a68bd886217e5b81589461f7 |
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