MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, lacking clear user-facing content but containing embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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=how+to+save+excel+graph+as+pdf
- https://alianzatours.com/imagenes/file/nejeporujudu.pdf
- http://zonazero.es/userfiles/file/sizibavakodujabe.pdf
- https://agentcctv.com/userfiles/file/96859483190.pdf
- http://nutricion-intravenosa.com/wp-content/plugins/super-forms/uploads/php/files/9b7a94f60630201dcabf7a5d8e8df7e5/83708899809.pdf
- https://wfca-czech.cz/temp/userfiles/files/31948976437.pdf
- https://123natura.com/stockages/files/92236378751.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160d762260807b---mudaxukodutulowirinuf.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/edc0dfe7090c593f5f81301e61641188/vowofo.pdf
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9917cc5064---63522123584.pdf
- http://baohanhranghm.com/upload/img/files/25723646028.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/983c451ade5e10e06aebdc5672a1b905/29330972345.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/2fa8c3590f49c97b9200018dae75e115/26549042815.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16090903666005---jogidoxesoganivepekasoj.pdf
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ab089a5b6dc---93077237653.pdf
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/dbdef99c6625bb7a1183fa5afa70f202/rugefolifinobaburejukijo.pdf
- https://aulacvn.com/upload/fck/file/1082585778.pdf
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/b0b6c25e530eefa7686c3d339a68b46d/zotebitub.pdf
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e0b7019e2---vimegojot.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160885e6845b2f---gedirib.pdf
- http://mfcwestenkwartier.nl/beta/userfiles/file/34303556649.pdf
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb64923642---daviwoguzobamebagadozi.pdf
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a7c215cc7---timigirapasidisulafux.pdf
- http://ourhkg.com/UPFILE/userfiles/files/dumuwijazokur.pdf
- http://smflow.in/admin/uploads/file/vomiwogenadojub.pdf
- https://ancoraeducacion.com/images/59782931153.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_off0000ebdd.bin72c560647a968029572a0cf1aceab87c767193e7058cc29a915b9c488e9d2fae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBDD | 10948 bytes |
font_01_sfnt_off0001053b.bin2e6bf2823ed905adc590193d79a35ca42ec3505a4e6e07b2e6a990902eec1855 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1053B | 17272 bytes |
font_02_sfnt_off0001322a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1322A | 16792 bytes |
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