MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, as these are common tactics for distributing malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://chcial.ru/uplcv?utm_term=physics+formulas+for+neet+pdf
- http://noithatachau.vn/webroot/img/files/kenitufokamela.pdf
- http://memphiscentral1969.com/clients/865565/File/niverelalim.pdf
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aae8a07203c---22303894247.pdf
- https://condominiovillage.com/userfiles/file/71673062860.pdf
- https://makojudo.pl/zdjecia/fck/file/24484845581.pdf
- http://chiengthai.com/file_media/file_image/file/nopinidigadopetijeg.pdf
- http://www.pantonerestauri.com/ckfinder/userfiles/files/kuwazuwevamojeziz.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/033e4d38d656863f5990f19119b2bf49/59272914645.pdf
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d033c93bc7---12622998605.pdf
- https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d84e29b0c---xapup.pdf
- http://shinyoungvalve.com/userData/board/file/41389608482.pdf
- https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/i85e7dfgkrks6riv4gaesenj6t/jikerabanado.pdf
- http://huile-de-nigelle.info/userfiles/file/sazazi.pdf
- https://www.blondel-bois.fr/ckfinder/userfiles/files/78874581284.pdf
- https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9585dd32b---12511856187.pdf
- http://flexa.cz/docs/file/biwoxasutoluvodakutib.pdf
- https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/55ff0ed57b70d8905c99908e62e5f994/34650549962.pdf
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106133eef419---gofip.pdf
- https://xn--fct8ml6mwue.tw/uploads/files/92248382529.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160dabd8b7e7b0---48867491182.pdf
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866dad2d592---fifufosorapotoka.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cfdf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFDF | 16792 bytes |
font_01_sfnt_off0000e7f1.bin76cf4e73d87fef1642f4eeaa28a25a7b8eb42ec790305cfa368fa6e9a839002f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7F1 | 17788 bytes |
font_02_sfnt_off0001157d.bin4a023e504fd2fc87117fbbe90f0f64c501626dae4f4e174307917355ecd27dc8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1157D | 11100 bytes |
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