MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://archism.ru/uplcv?utm_term=%D0%BA%D0%B0%D0%BA+%D0%BE%D0%B1%D0%BD%D0%BE%D0%B2%D0%B8%D1%82%D1%8C+windows+7+%D0%B4%D0%BE+windows+10+%D0%B2+2020+%D0%B3%D0%BE%D0%B4%D1%83
- https://hirurgija.me//files/38768232730.pdf
- http://hakkabrothers.com/userfiles/file///bireterebifuwa.pdf
- http://rollfactorytogo.com/uploads/files/rawutamelogulizi.pdf
- http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eed5a5b595---94241342933.pdf
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/eofo51iai298sb97h3hg68r2s2/vajesote.pdf
- http://ags-sib.ru/ckfinder/userfiles/files/bivejopagewiwerumuf.pdf
- https://aimhc.com/userfiles/file/5642591546.pdf
- https://residenciasanamaro.es/userfiles/files/nuputum.pdf
- http://techbis.pl/files/file/58516599582.pdf
- https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/950d3bdc08f13cd3ace2837acd8bba5f/30153982367.pdf
- http://macabrey-luthier.fr/data/Files/lunabobizutupuvuparod.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/afc4c3b93cc13d7aaaa1362c744851a4/tutatow.pdf
- https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160908dcd9dfc1---gupibozu.pdf
- https://tselectromechanical.com/uploads/CKfiles/files/16144381269.pdf
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/kfq8m9nbp60d46j7o9pj1g6vj4/83853783545.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3ae6aa1f8---22868882809.pdf
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/qqh5f315oqopf1fospttebaqr4/16761543077.pdf
- http://medtravel.lv/images/hand_uploaded/files/fivefira.pdf
- http://uamarkets.com/images/file/kiremexe.pdf
- https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/f2a87021bdc18f98a05f8714904fcdc3/27761278493.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160e24d7c92f2c---nagida.pdf
- http://kaies.net/upfiles/210709075252035810egdgwz.pdf
- http://kameleonhastanc.hu/files/file/4892850098.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5bf21baeb---metapigivebige.pdf
- http://cl-metalparts.com/d/files/44769942308.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_off0000f453.bin71a02e4753bea7a86d1cdaae07e87d54b2f9cc3004270793ae805e4994806799 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF453 | 23304 bytes |
font_01_sfnt_off00012e27.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E27 | 16792 bytes |
font_02_sfnt_off0001463e.bine7e071a09c96cf0afb2118e466c87ecabefd1e8e2ec1f901a19699700d2b14de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1463E | 11460 bytes |
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