MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm for distributing malicious content. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure related to educational content, likely to trick users into clicking the embedded malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://catamma.ru/uplcv?utm_term=worksheet+of+ratio+and+proportion+for+class+7 PDF link annotation
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca6d759898---pavavuwazoxufakeraguv.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085d2ee7677a---rakabavanaxafesuxuwebo.pdfIn PDF document text
- http://bebelino.ru/userfiles/file/newuberesul.pdfIn PDF document text
- http://euro520.net/userfiles/file/162136162289137293.pdfIn PDF document text
- https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/d2fab16a402cc57ba55de0d54f379b2c/22655506777.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160862e416b520---jugide.pdfIn PDF document text
- http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609477f902819---saxezaxawisuvatu.pdfIn PDF document text
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d872ee765---95915881141.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609452453be58---38435625948.pdfIn PDF document text
- http://cheers-gifts.com/userfiles/89814781797.pdfIn PDF document text
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/ujncprqa3j5so2mjsgmhgro1ie/pigiki.pdfIn PDF document text
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0872659bc---39629040623.pdfIn PDF document text
- http://aeronautike.com/userfiles/file/wurowolef.pdfIn PDF document text
- https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/5c4e7d575bb91d67e6db48599a296099/mulekorawelevinomaf.pdfIn PDF document text
- https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/7aa790fdd1cf9bfca6cdaaff30aa9b27/80469719744.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000f784.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF784 | 5400 bytes |
SHA-256: 42023cc6b5422d8842ed7ce8bd552664ccab176c1ca0b4677d485c4dad8a76a9 |
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font_01_sfnt_off000109f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109F5 | 11652 bytes |
SHA-256: 0ef05c40b59425c7b8d10bf56d84fa9b455e03531cdc8b991be20df12ed0279f |
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font_02_sfnt_off000131eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131EB | 16708 bytes |
SHA-256: 0a11f6b327b571b9354ec4247a40191b5ea00683e3b2d08aa36c48327453916f |
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