MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and a large number of external URIs, many of which point to compromised CMS uploads or disposable hosting. These links appear to form a link farm designed to redirect users to malicious PDF files, likely for phishing or malware distribution. The ML classifier strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
Heuristics 6
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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 http://eschool365.in/js/admin/uploadfiles/file/8283709364.pdf In PDF document text
- http://directopinion.biz/uploads/FCK_files/file/siwotozolexibov.pdfIn PDF document text
- https://an-professional.ru/img/files/file/norafovu.pdfIn PDF document text
- https://digireg.dk/upload/metozidileluzimuditavax.pdfIn PDF document text
- https://kawanmto.net/contents//files/jezuxokajamutam.pdfIn PDF document text
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/115d6ed9eb545e943c454b0298d3976a/84734937013.pdfIn PDF document text
- http://hanleyresources.com/images/xelivutulujonaku.pdfIn PDF document text
- https://howaidalawyer.net/userfiles/file/fepogaviketowatisup.pdfIn PDF document text
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160742627973ae---97349634731.pdfIn PDF document text
- http://paoladebenedetti.eu/userfiles/files/vavebubupuvote.pdfIn PDF document text
- http://electrogalicia.com/electrogalicia/recursos/archivos/84635732185.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16118a2e4bb90b---38408127973.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8772eda5a2---boredipibineviwuje.pdfIn PDF document text
- http://artospace.com/pics/file/wetubelidulixobogosabi.pdfIn PDF document text
- https://www.mnogotrop.com/ckfinder/userfiles/files/41045688570.pdfIn PDF document text
- https://csodamalom.hu/files/files/58313986328.pdfIn PDF document text
- https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a07b853986---6006786874.pdfIn PDF document text
- http://bulgankhangai.mn/userfiles/files/govuluwetufagulevixu.pdfIn PDF document text
- https://atl-50.com/files/file/41496455432.pdfIn PDF document text
- https://renesens21.com/ressources/upload/files/kogalimevoxitupixigurezal.pdfIn PDF document text
- https://icrs-as.com/userfiles/file/78432982616.pdfIn PDF document text
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/1sumn2pshcurfc8ev61amrufjm/kavavatuwufakuxopoza.pdfIn PDF document text
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911ebbb8af0---36222311339.pdfIn PDF document text
- https://fceresources.com/ckfinder/userfiles/files/65862482365.pdfIn PDF document text
- https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/ecf1752bf945588844874992a078fde0/masemekusezowakulinisure.pdfIn PDF document text
- https://planet-for-events.de/userfiles/file/powef.pdfIn PDF document text
- https://condominiovillage.com/userfiles/file/3079792398.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=business+studies+class+11+chapter+3+notes+pdfPDF 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_off0000e7c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7C9 | 11096 bytes |
SHA-256: 1b8fe2de032f052214884a98429e9e22ed30704949d0c850c64435b1b5e2f2d6 |
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font_01_sfnt_off000101a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101A7 | 17028 bytes |
SHA-256: c624e18196e3e59ba0e335f108d7f81a67df011f62a0b6983959306325ff50dd |
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font_02_sfnt_off00012dfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12DFC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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