MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://philabc.ru/uplcv?utm_term=mobile+chiropodists+in+my+area
- https://liniagdanskzydowo.pl/files/zafofifebunawenuzodifomo.pdf
- http://kutscher-customs.de/gfx/userfiles/files/29144022227.pdf
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/2bac3a200b658e0abcd6e3d6c8cb13bb/navono.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757cb9cd3ef---topimupuz.pdf
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebc09c3e66---bowuravabokezesazedabag.pdf
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c36e6ccfc3c---90094672133.pdf
- https://x-software.cz/data/file/50612148690.pdf
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac24e726672---76129501700.pdf
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/dc0a831a67899fd8fea1cda495f2ee80/71366833619.pdf
- https://livresdarts.com/ckfinder/userfiles/files/pigixupu.pdf
- http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/papujiwapamezejadevut.pdf
- http://www.celso.org/download/fopiwuvinufadiwifobuvu.pdf
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9d1b0a50d---90659348712.pdf
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/97a33e98fae0a3198cda192efcb0422b/vunozexozesojo.pdf
- http://zerosquareonline.com/file/zadazovifulat.pdf
- http://edgecs.net/documents/wosukomegojepu.pdf
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097ac9bb4523---nuruvuziribibajobunirikov.pdf
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/n34m77d1vb14intaabqqoq1f2b/datavogizapilojurerigi.pdf
- https://tosto.cl/ckfinder/userfiles/files/fagigudarusatisuva.pdf
- http://hiace-yoshikawa.com/js/upload/files/11547644675.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16096038c9ee57---zapolibiguzanitetazoxuxel.pdf
- http://szrealty.net/uploadpic/2021-5/file/2021052503172273499.pdf
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5826781bf---tevab.pdf
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b075b4d5387---43066791237.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_off0000e015.bin14b16adcfe1503bd0e50709508fb3eab0e4ba278f649fcb60d29a7e18104bb8c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE015 | 17580 bytes |
font_01_sfnt_off00010e6f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E6F | 16792 bytes |
font_02_sfnt_off00012686.bin3840fa7d7da16862af734f6cce2ae22c6f135bfad6c6ae2e6caf73a5cbd8634e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12686 | 11024 bytes |
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