MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The presence of embedded JavaScript and a high ML classifier score further support its malicious nature. The ClamAV detection as Pdf.Phishing.Trojan confirms the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://smidgel.ru/uplcv?utm_term=download+app+lock+apk+for+android PDF link annotation
- http://rent-lease-no1.com/userfiles/file/20210910060508.pdfIn PDF document text
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161450083725d3---vuxapukazejexafozavo.pdfIn PDF document text
- http://studio-orlandini.com/userfiles/files/dafile.pdfIn PDF document text
- http://sochi-riba.ru/ckfinder/userfiles/files/bejunat.pdfIn PDF document text
- http://palletgoanloi.com/img-dn/files/vaxukufamuvemak.pdfIn PDF document text
- http://odesignlab.ru/admin/ckfinder/userfiles/files/dokoniwerewu.pdfIn PDF document text
- http://movietek.vn/hinh-anh/files/33237833895.pdfIn PDF document text
- https://full-e.com/app/webroot/userfiles/files/20210919_081417.pdfIn PDF document text
- https://i-chat.tw/js/ckfinder/userfiles/files/64221146593.pdfIn PDF document text
- http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/vunosez.pdfIn PDF document text
- http://assisdrive.pt/userfiles/file/97888613395.pdfIn PDF document text
- https://fobh.net/userfiles/files/wujutekusudizuzofab.pdfIn PDF document text
- http://ingpoggi.eu/userfiles/files/xirutexigej.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613334a89b197---rebeka.pdfIn PDF document text
- http://sungsam.net/userData/board/file/77102066233.pdfIn PDF document text
- http://psychologkmalinowska.pl/ckfinder/userfiles/files/67120719726.pdfIn PDF document text
- http://esangsok.com/upfile/files/pewum.pdfIn PDF document text
- https://nhaccugiare24h.com/uploads/userfiles/file/zipuzegise.pdfIn PDF document text
- http://purepassion.pl/userfiles/file/86050271912.pdfIn PDF document text
- http://fatename.com/uploads/files/202109081511389065.pdfIn PDF document text
- http://onlinetradeshow.ir/uploads/files/sivukov.pdfIn PDF document text
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/96453bcb3d8e966edbb3b58faa1a5f84/fedozunode.pdfIn PDF document text
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161406378bb0c8---27469898440.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_off0000c9e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9E2 | 10392 bytes |
SHA-256: 7956178f7f297ee47cdea28f346bc66d1c7d0e86407cc6d3804941824a998ff7 |
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font_01_sfnt_off0000e17f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE17F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f991.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF991 | 18332 bytes |
SHA-256: 34fd156e5ec92281555c5258e95457c87f1671cd45322fa3ab0053b2b78890a0 |
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