MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript, which is a common technique for executing malicious actions within documents. The numerous external URIs, many pointing to compromised CMS uploads or disposable hosting, suggest a link farm designed to redirect users to malicious sites. The ML classifier strongly indicates malicious intent, likely for distributing further malware or phishing for credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. 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://synerhu.ru/uplcv?utm_term=immersion+vr+pdf PDF link annotation
- https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/74c3093fc9edd53630892503bd7520fb/bikerexenomitiruge.pdfIn PDF document text
- https://sitarasign.ir/data/file/45616773046.pdfIn PDF document text
- http://fotocaroli.it/userfiles/files/babiruk.pdfIn PDF document text
- http://laduses.nl/image/file/xetejojumanurajuja.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608158947d92e---66344415793.pdfIn PDF document text
- http://dlzj.net/upload/files/20210720204812400988.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/8b87d4c8ff824c1b999ccde75cbdafab/xiridugetuzarom.pdfIn PDF document text
- http://www.findvoters.com/userfiles/file/kokelugoba.pdfIn PDF document text
- http://marinda.ru/pics/images/file/76149354128.pdfIn PDF document text
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6ec439a68---ruremenejig.pdfIn PDF document text
- https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7c50b34b9---65867839804.pdfIn PDF document text
- http://jinwoosmc.com/userfiles/file/6911896609.pdfIn PDF document text
- http://mos-craciun-inchiriere.ro/fckfiles/file/71635212979.pdfIn PDF document text
- http://citra.cl/userfiles/file/42248246212.pdfIn PDF document text
- https://ascii.tn/web/cgi/file/65762349428.pdfIn PDF document text
- http://mtsskzy.com/userfiles/file/10936845622.pdfIn PDF document text
- https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/31880974384.pdfIn PDF document text
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/aos6h7r77uojndl5kml2md4652/61323210010.pdfIn PDF document text
- http://volkshilfe-vlbg.at/images/content/files/sogajobop.pdfIn PDF document text
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/669e103e6a1f6ef19c9c09351e75664b/gamodubupabokuma.pdfIn PDF document text
- https://ratsimae.ee/media/contents/file/69323714423.pdfIn PDF document text
- http://ctyrkolky-gamax.cz/data/dokumenty/sizizifetigasimoduta.pdfIn PDF document text
- http://ekogamma.pl/javascript/ckfinder/userfiles/files/mowiteweminezomokibakap.pdfIn PDF document text
- http://associazionemillesogni.it/userfiles/files/jujizidezoteki.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_off0000c4ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4BA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dcd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCD1 | 10372 bytes |
SHA-256: 2c2f8b56060430e2671fc89dca41e583880cdb6d5482d5a6ffd724e0ab4c3535 |
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font_02_sfnt_off0000f42d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF42D | 19880 bytes |
SHA-256: 97a7e0566186257feac657f2d0fc7064c034aea0a82c91e3ba81f307e6b853c6 |
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