MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external URIs, many of which point 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 for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://queure.ru/uplcv?utm_term=history+of+the+necronomicon+pdf
- http://felixefontesadvogados.com.br/ckfinder/userfiles/files/vuwaterudufipameki.pdf
- https://toptenstudy.com/upload/files/BodyFile__613F47EF3E9FA.pdf
- http://www.guus.edu.mn/ckfinder/userfiles/files/taxorokuvu.pdf
- http://papaicountrylodge-longstay.com/user_img/files/refabupupuvomemajopobovub.pdf
- http://cdseoulps.com/uploadfile/fckeditor/file/zinevezexajiru.pdf
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2cf3eb1b6---11144332406.pdf
- https://soudurelauziere.com/upload/editor/file/91699600971.pdf
- https://confidence-ist.mktechsol.com/ckfinder/userfiles/files/52997548098.pdf
- http://radissonhoteltraining.com/userfiles/file/77853784578.pdf
- http://tantos.jp/js/upload/files/35900329466.pdf
- https://goooinggroup.com/userfiles/files/20210921_064842.pdf
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/3750a76424f8c2bc6be8280f03fd7178/finovusabekilowopujubava.pdf
- http://afslab.asia/upload/files/gofolikagalijitatuluzufa.pdf
- http://messtores.ca/fck_user_files/file/51183911490.pdf
- http://kolaykanal.com/userfiles/files/46908697736.pdf
- https://dubaimotorcycletours.com/uploaded_images/files/muxatit.pdf
- http://chinawin-consult.com/userfiles/kogagepomofibogoliro.pdf
- http://forter.vn/hinhanh/file/51550332180.pdf
- https://successstudio.net/userfiles/file/25553557731.pdf
- https://fengshan-zhennangong.org/upload/ckfinder/files/30214609838.pdf
- http://sofia-es.tokyo/yamituki-n/uploads/files/10391138253.pdf
- https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/ae00c95abe99dad1e17ff7bcc8514ba0/gaserewolatu.pdf
- http://carbontuning.ru/file/paxawezivefuvoxabof.pdf
- https://vanchuyenduongsat.vn/upload/files/8035196769.pdf
- http://umhouses.com/uploads/files/13826016329.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_off0000c288.bin5796f5489ab7f1da81e9d5d48719c6a93343cb6293191a82f1955ec782214156 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC288 | 20080 bytes |
font_01_sfnt_off0000f746.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF746 | 16792 bytes |
font_02_sfnt_off00010f5d.bin333fd173f964db77c26c4d0ede46efca1c1896acf92a4613b786e61eca5847ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F5D | 10780 bytes |
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