MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm or redirection mechanism. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports the conclusion that this PDF is used to distribute malicious content or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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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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=operations+on+fractions+worksheet+with+answers+pdf
- http://vizit-k.net/uploads/editor/files/wexobijubu.pdf
- http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160dbe180a8d23---vorosotemelejixazezufidem.pdf
- http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160736a6c31ff0---39417626183.pdf
- http://www.look4job.gr/images/_user_na/file/regakexev.pdf
- http://podlahyadvere.sk/editor_uploads/system/files/14787371265.pdf
- http://talk200.com/admin/admin/uploadfiles/file/75738186164.pdf
- http://zubrcup.by/files/files/82146519143.pdf
- https://turismopontevedra.com/ckfinder/userfiles/files/30370789555.pdf
- http://inhome360.ru/admin/ckfinder/userfiles/files/vokijeze.pdf
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/1b4b0b78d6f5a11e09b084fa00679126/gexivejedabetapera.pdf
- http://pointerboards.com/uploads/admin/files/7459080407.pdf
- https://alexandrapanayotou.com/web/images/static/file/texalopulivitibawuna.pdf
- http://nadiadsa.org/userfiles/file/78803440844.pdf
- https://gamaconsultores.cl/upload/file/46210010241.pdf
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0622/225486174f4db4bb9ec4c92e20df21a9.pdf
- http://alexlunacoach.com/img/editor/file/31493998706.pdf
- https://zippy-inc.com/app/webroot/userfiles/files/tapidogedujixedevubazob.pdf
- http://myshopgroup.com/userfiles/files/33272826393.pdf
- https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/a2e428600495c1c14e3c68f49460f7b8/rizowufani.pdf
- https://art-lamps-rali.eu/files/file/nirozif.pdf
- http://bouncebodysupplements.com/newerac2c/userfiles/file/gisoseriviragure.pdf
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/763e24d32fb5d2b529e60503af0947d3/82329219814.pdf
- https://atlastoursntravels.com/userfiles/file/bugiritotemolomuroba.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_off0000b6a5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6A5 | 16792 bytes |
font_01_sfnt_off0000ceb7.bin42bed3b4fa666c2eef329fb0e057aef6f0a4216a49f519930f4e8f22251289c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEB7 | 16328 bytes |
font_02_sfnt_off0000f888.bin894b6601b2a24ea5bad56e33fd38631fb541fbc845079224ea0a901112fb801c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF888 | 10876 bytes |
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