MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
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. While no scripts were extracted, the sheer volume and nature of the URLs point towards a malicious intent, likely to distribute further malware or phish users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 http://phanphoiongnhuahoasen.vn/upload/files/fexifasoketi.pdf In PDF document text
- http://chiari-web.com/ckfinder/optimist/files/50491700430.pdfIn PDF document text
- https://hnhaa.com/userfiles/tnejp//files/59293194260.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075861ac4417---61279991284.pdfIn PDF document text
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609684d21e42f---1181125643.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/m693pppk9tnl8ig1d29ncg7o60/38606560282.pdfIn PDF document text
- http://arc-en-cielproduce.com/ckfinder/userfiles/files/gidijoj.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad9eca98d6---66251196228.pdfIn PDF document text
- http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9585771df---32054208047.pdfIn PDF document text
- https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/bql2q32t4iehqvp79n754ts15m/xovixub.pdfIn PDF document text
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/4cd304ff05339a86a2930f09432dc2cf/73210786798.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/17vu15thduqpiabvs6777cu518/detaminiwemesugigiwovomo.pdfIn PDF document text
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b64313f00f8---28359842688.pdfIn PDF document text
- http://originalcheck.it/public/img_admin/file///beniz.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/id6q61if2704tirans34b9p7c0/82690568497.pdfIn PDF document text
- http://ip-golubev.ru/ckfinder/userfiles/files/30902831749.pdfIn PDF document text
- http://studioriboldi.eu/userfiles/files/poxetu.pdfIn PDF document text
- http://burchiellati.com/file_fck/file/11928396043.pdfIn PDF document text
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f75bd240a4---2797507736.pdfIn PDF document text
- http://tropo-design.com/ckfinder/userfiles/files/8936846709.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/jabdir4r62sfipusljcrf23cu4/viren.pdfIn PDF document text
- http://artecgroupservices.com/imagenes/file/71494608751.pdfIn PDF document text
- https://charlesstreetvideo.com/userfiles/file/wagewovilezoxi.pdfIn PDF document text
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c22b374e116---redoguvoradesixifuxag.pdfIn PDF document text
- http://grafiport.com/userfiles/file/89312786961.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=be+on+board+withPDF link annotation
- 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_off0000f32e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF32E | 10412 bytes |
SHA-256: 4aa6bb843976d529dfc03dbaad96f8744782fd70132a4410cc75c1bcc25dd7eb |
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font_01_sfnt_off00010abd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ABD | 16788 bytes |
SHA-256: 3dfda169e0003cc2be6732ad37bb2ed934e38eeac1a0eef63dca713fb1df5b4c |
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font_02_sfnt_off0001369c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1369C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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