MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
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://chcial.ru/uplcv?utm_term=lab+equipments+and+their+uses+pdf
- https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/41b2df586036020636935db9b0bcbf35/57107309764.pdf
- https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/j5gi6f3c07d1sgsuovd1jf5v3i/rubudawukuxobakoke.pdf
- http://interface-referencement.com/userfiles/file/14422055152.pdf
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/d15416739cc84b3a445f040fbbb64da4/77553488661.pdf
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/74af2ba096783efc78cb4a24f5f5eda2/49014783637.pdf
- https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/f68f8b18797bde52f45ec4d7f0c5da35/91820663354.pdf
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcd88b5627---28613344706.pdf
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/85d692335b4e4ec74001fe37b42005a1/tugidig.pdf
- http://matstravel.ru/userfiles/file/remebuzapimarujovabelot.pdf
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b58560c17c0---90070546287.pdf
- http://bezagsecurity.cz/userfiles/87921824949.pdf
- http://arcdesantmarti.com/biocop/Images/images-editor/file/12102022397.pdf
- http://vdtonline.vn/static/uploads/editor/files/wemabeloteb.pdf
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607faeb00ea56---suvibulepabuvese.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160983ef754403---siluwifijeboxef.pdf
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/5969e9ce74154dfb00991ae1b9a0670e/peles.pdf
- https://kisikana.hr/userfiles/file/suwexeruvipawopifasifi.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d578bfae8---bavigetibigupusuxeb.pdf
- https://aimhc.com/userfiles/file/bizulawiginaditinalowux.pdf
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/a37cc0786b9a2034a00a69bcb720a7d2/poxaxevopufazowil.pdf
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/0ps6tr3clvbedik6nfbectd082/38209448398.pdf
- http://mondoacquapiscine.com/userfiles/files/26732711012.pdf
- https://www.cittadelmiele.it/wp-content/plugins/super-forms/uploads/php/files/ebcd16764eba852637682df0a3622544/topibidunavikux.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_off0000e889.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE889 | 16792 bytes |
font_01_sfnt_off0001009b.binbe2312329067f0a19826ebc9b7be50b20551912fae983b2d9ec6b7114be3c0de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1009B | 16992 bytes |
font_02_sfnt_off00012cda.bin92867db377787eaaac1f9de69b54a22d8013a396b3192c94d64d82ac35c18cad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12CDA | 10940 bytes |
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