MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting. The ML classifier strongly indicated maliciousness, and the structure suggests a link farm designed to redirect users to potentially harmful content. No scripts were extracted, but the URL patterns are indicative of a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://chcial.ru/uplcv?utm_term=o%27reilly+practical+statistics+for+data+science+pdf PDF link annotation
- https://davaocarrental.com/images/file/kelorikivivi.pdfIn PDF document text
- https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/9sq85l6q1fif8eidf9dkf0ei3n/38299154236.pdfIn PDF document text
- http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/d52905a2fdb5f228dcd064ecf2ec9c13/9046656479.pdfIn PDF document text
- http://aodaibooking.com/FileData/ckfinder/files/20210706_66196099FBE990C8.pdfIn PDF document text
- http://beverly.kopanramen.com/uploads/files/56600889882.pdfIn PDF document text
- https://legouic-peinture.fr/userfiles/file/88099377993.pdfIn PDF document text
- http://boekenwinkelindex.nl/images/uploads/sijupanenukofifuxoki.pdfIn PDF document text
- http://alexhofford.com/temp/files/file/fameruf.pdfIn PDF document text
- http://baheth24aqari.com/ckfinder/userfiles/files/rituvipiva.pdfIn PDF document text
- http://arcdesantmarti.com/biocop/Images/images-editor/file/tutixatigadorudak.pdfIn PDF document text
- https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/fbek7k7rq2qas47vegesqvfkrn/74908797118.pdfIn PDF document text
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/tkb59masqa7k8ln2ff7454fop2/golejumuzidosepazedowox.pdfIn PDF document text
- https://aradovan.com/userfiles/file/20180763178.pdfIn PDF document text
- https://hpsoft.shop/upload/files/90374808013.pdfIn PDF document text
- http://mgtofubbq.com/uploads/files/53784684339.pdfIn PDF document text
- http://druckmaschinenservice.com/uploads/fce/files/7837850916.pdfIn PDF document text
- http://minhvuongthuphap.com/upload/ck/files/83178282462.pdfIn PDF document text
- http://www.tiande-global.com/ckfinder/userfiles/files/76099772869.pdfIn PDF document text
- http://barcelonasixtytwo.com/userfiles/file/demitefulav.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/5367d69d4a30ba8c9dbfebfb8563fed5/93869312971.pdfIn PDF document text
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16073ff45aa3e8---26920514155.pdfIn PDF document text
- http://brmhn.com/userfiles/file/20210618055020_ncwdlc.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_off0000c2be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2BE | 18040 bytes |
SHA-256: 37447ce81faec62053d09af01cc788f5c229b7382138ce8644950a4a657e69f8 |
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font_01_sfnt_off0000f215.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF215 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A2C | 10788 bytes |
SHA-256: ee97f2f1e6cc8c859eb59ec7c3a2ee1d7a919f8d4d52e15eebdaf8a9c79fc3f7 |
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