MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress sites acting as link farms. These links redirect to other PDF files, suggesting a multi-stage attack designed to obscure the ultimate malicious destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9790
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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 https://laborke.ru/uplcv?utm_term=facts+about+england
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/4ki6rasolj2haq2oh2pooh90l4/fajabugazinegumiw.pdf
- https://ajitcoatings.com/uploads/90212945019.pdf
- https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/a846ddbbf08797dc0601004f2bfd6389/22285399062.pdf
- http://fullcolorspandoeken.nl/userfiles/file/76124091719.pdf
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6d29c54ba2---7263333961.pdf
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/bb2ie96th4kj3todb0b8faobv4/rinuxi.pdf
- http://gld-lining.com/user_img/files/71112044454.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8d7789af4---fopumamexas.pdf
- http://agataklimowska.pl/userfiles/file/baponekogon.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/7d8733e4f76feff083fb30b62d9e42a4/43981209122.pdf
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086ada392df9---vivupudezuvofimi.pdf
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a86726967dc---67034705337.pdf
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/6ef87a76c86985bf84874870f7b0017b/53843130150.pdf
- http://grandchainfamilyfoundation.org/clients/85333/File/14120806495.pdf
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/63caf6aa7a9bc46ab73880827ad4290c/vumixov.pdf
- https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/15534030e0f7a36b22b2636f95ccf08f/6652975291.pdf
- http://viermaalh.nl/Bottesteyn/Site/afbeeldingen/file/77220205978.pdf
- https://gtselect.fr/ckfinder/userfiles/files/85411975937.pdf
- https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/1601811faeec377942dc58307f2c87ab/xuzalujobakowipegizexumuv.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a533f3afbe8---fojozemavesikuf.pdf
- http://tantos.jp/js/upload/files/gifalidopuru.pdf
- http://bahattinburyan.com/userfiles/file/44870296991.pdf
- http://xn--or3bi2da319p.com/upload/fckeditor/file/33606342973.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a180d0eb41e---xikifulovinefusutevo.pdf
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fdef2e8bfe---76368965301.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d870ba5f0---wirupifof.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00013c08.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C08 | 16792 bytes |
font_01_sfnt_off0001541a.binbc3c2c84d5b750e64834e998a1dd23667d3fb7b7ab5d7e53ed14ce171e694af6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1541A | 17888 bytes |
font_02_sfnt_off000182a6.binf8fae9f8e9ea20b40bd40f830feca4b95a192c9e277c142b4bc48b6beb6f1197 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x182A6 | 10568 bytes |
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