MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document contains a visual download button and numerous links pointing to compromised WordPress sites, suggesting a lure to download a malicious file. The presence of a link farm on disposable hosting further supports a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ed8a4b10044---96178808010.pdf In PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788a0caa0d2---togerewepe.pdfIn PDF document text
- https://cremyco.com/app/webroot/docs/file/41015844720.pdfIn PDF document text
- https://soudurelauziere.com/upload/editor/file/62556576970.pdfIn PDF document text
- http://berrybucs1973.com/clients/3/3a/3a2d6910be1067feaf6dc79f90d505e0/File/fatevikodakadilerarosogil.pdfIn PDF document text
- https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/02pg8m09sq569i6655vppeq5r2/ximojurigekup.pdfIn PDF document text
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5ed1d569c94e984492e8752a10a5625a/35625770138.pdfIn PDF document text
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/a0ea1e8e5a3a5232621b016c8802e7c4/34752875732.pdfIn PDF document text
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/bfbf1c02ac9be7937c9e6247f7307c35/45464425546.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16072f7bcc8684---40968204539.pdfIn PDF document text
- https://people11people.gr/uploads/File/91606739349.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/a3e5783caa7d70474d0fbbcd33629d22/kunodil.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/76d90f2684ace89b6aa3dff4897aef0e/94776736628.pdfIn PDF document text
- https://sieuthimayphat.com/ckfinder/userfiles/files/favivowupokujevolubolux.pdfIn PDF document text
- https://fo-prefectures.com/pages/files/65445556509.pdfIn PDF document text
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/dcg4ums3uqllu3amgh4070t9v4/94679811744.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca9df1e323---gefuvodexurosogigivirogi.pdfIn PDF document text
- http://gewoongroen.eu/app/webroot/files/userfiles/files/55219420067.pdfIn PDF document text
- https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085685ca260b---70997046239.pdfIn PDF document text
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160742ba8dad6e---rukufuvixepovotuwu.pdfIn PDF document text
- http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a84edc7045b---vitowufebabixibivel.pdfIn PDF document text
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8b15c87c0---gijuwutitikatunaxomu.pdfIn PDF document text
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/aa96f70f877ba16a1943e1c70960ec9a/76663637147.pdfIn PDF document text
- https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071fd289be8d---bipesak.pdfIn PDF document text
- http://sylvianapoles.com/clients/e/e6/e63d90d46a840f0b3195f531cec11f6e/File/72552354857.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=libro+facile+facile+b1+pdf+gratisPDF 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_off0000c897.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC897 | 10840 bytes |
SHA-256: d5cc6c08db3f9687b9c4c79db6c9ee11f8a8b4cc2fb865d4d72977715f683b52 |
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font_01_sfnt_off0000e15d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE15D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f96f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF96F | 16924 bytes |
SHA-256: 2e462d36fbec56415376388328cfa74c96add55e29db6a84f120f7b97e484ed4 |
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