MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery through these links. The embedded JavaScript is a common technique for executing malicious actions within PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://medvor.ru/uplcv?utm_term=ecology+the+economy+of+nature+8th+edition+ebook PDF link annotation
- http://teusz.pl/UserFiles/file/53733801055.pdfIn PDF document text
- https://artenika.pl/fck/file/novaburilovoxajesiwi.pdfIn PDF document text
- http://sergey-yushkov.com/pict/file/67047778638.pdfIn PDF document text
- http://ecohouse-lab.com/userfiles/file/dopolizalafu.pdfIn PDF document text
- https://muguet.fr/sites/default/files/file/69551280296.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e58c765ed---niwudibijik.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/252021f834e1679812e420e0e00e82e5/25927524171.pdfIn PDF document text
- https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/68bd127df6066ce8f0aeea5c0c81c528/rulobu.pdfIn PDF document text
- https://www.agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/32700919779.pdfIn PDF document text
- https://lidiyageorgieva.com/ckfinder/userfiles/files/82088660631.pdfIn PDF document text
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/3b1f69e971461548e19319d263ed9464/petomunu.pdfIn PDF document text
- http://batiment-tunisie.com/userfiles/file/jipijulepafamimeweberew.pdfIn PDF document text
- https://tecnomatec.cl/upload/file/kobosupatupojevu.pdfIn PDF document text
- https://ddtoyz.com/ckfinder/userfiles/files/44878278331.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079958458b67---37504762401.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084e6e010810---vodiwi.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160987d1d96d97---lopozo.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c74bc7fcf9---80026051478.pdfIn PDF document text
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0812/929db19089458a3b8bc5b48fc849ee66.pdfIn PDF document text
- http://adamslakeband.org/userfiles/file/30515501177.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084a6798b883---20088635220.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/13fd5083de44dad1befecd3bd74b4ade/92073209347.pdfIn PDF document text
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/21492566c98af85fa347dfe3c1a140aa/xomowonet.pdfIn PDF document text
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/3f2eeefafc9768d915e5f251d65b92c3/94958653989.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_off0000d756.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD756 | 11392 bytes |
SHA-256: cd31840096dc1b5f7c1cd0caca1fab8112af42853b862f3c6994eab4bea48672 |
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font_01_sfnt_off0000f1d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1D3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000109e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109E5 | 16908 bytes |
SHA-256: c6380489995c70eb7f79cad7d6a94594cd5053379b1f1adbae4de31403889347 |
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