MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple heuristics indicating it is a link farm hosted on compromised CMS uploads, designed to lure users with urgency and download calls-to-action. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the embedded URLs and link farm structure point towards a malicious workflow.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 8
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://digireg.cz/upload/56465001818.pdf
- https://bearings.vn/images/ckeditor/files/somakarevutuno.pdf
- https://zemtechnika.lt/public/site/0files/xobokuzaju.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e08d45fec---71052506236.pdf
- http://lukoilmarine.com/ckfinder/userfiles/files/6036945023.pdf
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16133bf156f92e---19236467879.pdf
- https://legyenegyjonapod.hu/userfiles/files/fovirerokokiworejuki.pdf
- http://biirbeh.mn/images/content/file/mevibizusi.pdf
- https://ichapps.com/ichapps/ckeditor-ckfinder-integration/uploads/files/87429989679.pdf
- http://deborahmayerlawoffices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jaxorijorovol.pdf
- https://swapnauraan.com/ckfinder/userfiles/files/27606708067.pdf
- http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/vumoturezanomifaji.pdf
- http://gildiamasterov.ru/userfiles/file/46108287855.pdf
- https://autoskola-scp.com/files/suxewufemox.pdf
- http://tarnava.eu/user_images/file/96637292013.pdf
- https://mallorcaboom.com/res/wysiwyg/file/tigorexamamivatemav.pdf
- http://gaziogluenerji.com/images_upload/files/88588421757.pdf
- http://lanaecoloridabruzzo.it/userfiles/file/vujef.pdf
- https://watosaphotography.com/app/webroot/userfiles/files/20210907_091442.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/pt1cudkqb2e1c2t0pah37jfjnf/9342389284.pdf
- https://rovetco.com/userfiles/file/segapiwuxe.pdf
- http://ansing.nl/userfiles/file/buwukanak.pdf
- https://albawadiroad.com/userfiles/files/8567172604.pdf
- https://kapefashion.com/files/files/12927368699.pdf
- http://shangrilatheshow.com/ckfinder/userfiles/files/95193294007.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=hera+pheri+watch+online+123movies
- 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_off0000ca29.bin01ef893219e770db7f37060ae909d5ac8a5d9bcbf3fdc2ad59815dee152cb90a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA29 | 17416 bytes |
font_01_sfnt_off0000f78f.binf353d167c31ab64b224a48a922f5f757a8c2d2509e64153ffd99469eeae08d6f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF78F | 11124 bytes |
font_02_sfnt_off00011179.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11179 | 16792 bytes |
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