MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://drafthe.ru/uplcv?utm_term=comparison+of+irregular+adjectives+worksheet+pdf PDF link annotation
- https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/0kc0otc6q9pi9aebjl5li606m0/geluwumisupedubupizuwo.pdfIn PDF document text
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794479561a5---zipad.pdfIn PDF document text
- http://keyflounge.nl/userfiles/file/giwuji.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607805d422017---32754148980.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a529d3109---xopudu.pdfIn PDF document text
- http://pneusmarene.it/images/file/84875903976.pdfIn PDF document text
- http://decamiones.com/userfiles/file/74988228328.pdfIn PDF document text
- http://www.oteliapelsin.ru/ckfinder/userfiles/files/wukoletod.pdfIn PDF document text
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1251d7249---fumilo.pdfIn PDF document text
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/5de8f2f6777341032186a0db6f3159a7/10675077847.pdfIn PDF document text
- http://bjhtdszdh.com/v15/Upload/file/20215241619395252.pdfIn PDF document text
- http://srividyaastrology.com/userfiles/file/pizefuwugegul.pdfIn PDF document text
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160757e82c85c3---rizusegemegox.pdfIn PDF document text
- https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/723975b343d0f82386df02ba803a650b/patokiluzexuvosame.pdfIn PDF document text
- https://groupburuemas1.com/contents//files/solinanixurifanedosi.pdfIn PDF document text
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/7jbha5n61fn87c15vuuotov7gc/75252859516.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607899f8dc29c---zifezisimajebedos.pdfIn PDF document text
- http://krzysztofmalec.pl/gfx/fck/file/gotanazutinotulosulepivob.pdfIn PDF document text
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/a2j180p83mfcn4qu01r0j81gc6/fukaxomoporurosatakowuvu.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/9810dee2114acd26e0044fb758732752/sumuwiveviw.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e91701bae---fomuporineselafajos.pdfIn PDF document text
- https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160819b34e67b6---gomufuwazawatulirojafam.pdfIn PDF document text
- http://scherzerpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/deluvewobitozuzu.pdfIn PDF document text
- http://ogbchurch.com/clients/880797/File/2136289422.pdfIn PDF document text
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160ac87dc82de7---fojapagovemapasidabuduvos.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_off0000f586.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF586 | 11572 bytes |
SHA-256: 49f98443e11263a195c6a9b5d2f0410b8155b960938d83ae22b1b4a9aec0da11 |
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font_01_sfnt_off000110a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110A4 | 18336 bytes |
SHA-256: dc46e8e582a0e7deda4954f8e6f60c3e7eec7f6398c9a9c14a3786fd6ab7cb74 |
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font_02_sfnt_off00013fee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FEE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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