MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics strongly indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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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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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://synerhu.ru/uplcv?utm_term=shooting+games+for+iphone PDF link annotation
- http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20210903075711.pdfIn PDF document text
- http://vtvxm.vn/userfiles/file/xazupefab.pdfIn PDF document text
- http://www.huntsvillepr.com/files/files/76449294225.pdfIn PDF document text
- http://russia-ex.com/images/blog/file/kabisabedaxukozumeji.pdfIn PDF document text
- https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613302726ed01---xakusawezamakuluxisepit.pdfIn PDF document text
- https://happycolaborativo.com/uploads/files/zenixapelelose.pdfIn PDF document text
- https://g4m3s-4p1-12s1.com/contents/files/80744190100.pdfIn PDF document text
- https://garraldaarquitectura.com/garralda_userfiles/files/dolisulupofokoto.pdfIn PDF document text
- http://vcelari.naceradec.cz/includes/ckfinder/userfiles/files/42463463465.pdfIn PDF document text
- http://gibisch.com/files/files/13894640942.pdfIn PDF document text
- http://nhasachthunam.com/upload/files/91056178309.pdfIn PDF document text
- http://chipgene.com/image/files/20210909_095222.pdfIn PDF document text
- https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/39a3583c82711e71c94d61e25b885cd7/79506376205.pdfIn PDF document text
- https://likeevent.it/writable/public/userfiles/file/xolopi.pdfIn PDF document text
- https://gbp.dropship-online.com/userfiles/files/vuwamigoza.pdfIn PDF document text
- http://electrogalicia.com/electrogalicia/recursos/archivos/97636944390.pdfIn PDF document text
- https://nibrasimansch.com/userfiles/files/busolosutipabe.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f1e82416a---begixejisamobi.pdfIn PDF document text
- https://remont-bez-zabot.ru/files/file/53430102050.pdfIn PDF document text
- http://easyliveconstruction.com/ci/userfiles/files/46482742170.pdfIn PDF document text
- http://bluecars.pl/userfiles/file/40678735236.pdfIn PDF document text
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/161344e8e69fba---94159623859.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f59e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF59E | 17784 bytes |
SHA-256: 338f44a4bc734f289d10017d01cd106109744d5e932221a7e74ac300f9591df5 |
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font_01_sfnt_off00012343.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12343 | 10836 bytes |
SHA-256: e61e6ad3ea31740647dc9e4f13a2d919c2a2b0752a2c8d15725aa04afeac8312 |
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font_02_sfnt_off00013c1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C1B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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