MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, and the heuristic firings suggest it's part of a campaign to distribute malicious content or phish users. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 5
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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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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://wastran.ru/uplcv?utm_term=classify+organisms+worksheet PDF link annotation
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/ca8b8d564b07cdfa00c713a8a3610073/9027540518.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f508344577---kijadomagitaga.pdfIn PDF document text
- http://georgewongdesign.com/gwd/upload/files/sogemakenerud.pdfIn PDF document text
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/4qi26o0rvsbcmn92eb6jf67bqp/favevoxujojeposodisunikix.pdfIn PDF document text
- http://palami.by/images/file/99023932222.pdfIn PDF document text
- http://bagliodeimille.it/userfiles/files/33181620551.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e91d5467f---86122314292.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/72172377013.pdfIn PDF document text
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16088a213942b0---70848189020.pdfIn PDF document text
- http://cadeco.com/testingsites/advantage_aviation/assets/media/file/60741229151.pdfIn PDF document text
- http://orikon.net/Images_upload/files/kapupetedomu.pdfIn PDF document text
- http://ubytovna-krumlov.cz/userfiles/file/buzepefasurunijifuzaxe.pdfIn PDF document text
- http://a1-automotivegroup.com/upload/files/vedisawisipebegetuwusel.pdfIn PDF document text
- https://a-pointpro.com/cms/ckfinder/userfiles/files/77040753628.pdfIn PDF document text
- https://zifu-tech.com/app/webroot/userfiles/files/16862279205.pdfIn PDF document text
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/6s2t9rmsdaiart8ani45q826b7/23074183069.pdfIn PDF document text
- http://austintownfitch1980.com/clients/879833/File/zomudonarize.pdfIn PDF document text
- http://nhaphangmy.us/upload/files/kazixuwi.pdfIn PDF document text
- https://mwasafat.com/uploads/files/surojeva.pdfIn PDF document text
- https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/cb66ac30f9286457d474491d6f2e3879/11877972926.pdfIn PDF document text
- http://mega.kz/media/upload/files/gidumurigesivekejiwijuw.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_off0000c44a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC44A | 10984 bytes |
SHA-256: e4b951ff7a73bac0b037a4ad011d21df8f28641a3ec9000d29f05e9e26536f56 |
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font_01_sfnt_off0000ddb4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDB4 | 17704 bytes |
SHA-256: f1d786d9a5302669a624aa367a9399ce87bfc843cb361270a99019c0d466e2cc |
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font_02_sfnt_off00010bdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BDF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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