MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and multiple external URIs, indicating a malicious intent to redirect users. The presence of a link farm pointing to compromised CMS upload storage and disposable hosting suggests a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly support the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 7
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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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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://huntic.ru/uplcv?utm_term=multiplayer+io+games+with+friends PDF link annotation
- https://delaneyllc.cfonewsletter.com/ckfinder/userfiles/files/fovoxilowupiwavufiw.pdfIn PDF document text
- https://ijmscr.com/ckfinder/userfiles/files/woresus.pdfIn PDF document text
- https://kungfuclasshongkong.com/louis/taichi/ckfinder/userfiles/files/tugumimowurugabijusezoj.pdfIn PDF document text
- http://dirpub.org/editor/ckfinder/userfiles/files/27376101384.pdfIn PDF document text
- https://edgecs.com/documents/totode.pdfIn PDF document text
- http://zehanbiopharma.com/upload/files/39462817140.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/bdbfd1db1041cd637db0489f8aec0782/pisowasevovi.pdfIn PDF document text
- https://simondaulte.com/ckfinder/userfiles/files/7703135947.pdfIn PDF document text
- https://vieclamlaocai.vn/webroot/img/files/dokixaleparipebexuvugap.pdfIn PDF document text
- http://cyuanmei.com/userfiles/file/rafujesazawesiruxedige.pdfIn PDF document text
- http://frankifoto.com/uploads/pages/files/zopibefed.pdfIn PDF document text
- http://oguraclutch.cn/uploadfile/files/49545125373.pdfIn PDF document text
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/83b16e8414441d55b2d2c5dc8b90aec3/88768428719.pdfIn PDF document text
- https://funke.be/data/file/57779491864.pdfIn PDF document text
- http://balade-pierry.fr/userfiles/file/xagufotukipalivelov.pdfIn PDF document text
- http://skonasystems.com/userfiles/file/89030923262.pdfIn PDF document text
- http://fcvperu.org/data/fcvperu/userfiles/file/29319269941.pdfIn PDF document text
- https://amoslodge10.org/ckfinder/userfiles/files/punuleraw.pdfIn PDF document text
- https://apaman.ti-am.jp/js/ckfinder/userfiles/files/41873183185.pdfIn PDF document text
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614c9e897a56c---madulefasurete.pdfIn PDF document text
- http://ilink.pl/userfiles/file/27565096189.pdfIn PDF document text
- https://casartigianiudine.busletter.it/ckfinder/userfiles/files/43496018224.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_off0000ae20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE20 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c637.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC637 | 11236 bytes |
SHA-256: 14e312ea28501f402db742e38dbfc41430939238ffea7ac6d7f7d243d5b161fb |
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font_02_sfnt_off0000e03d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03D | 16268 bytes |
SHA-256: 97e2b444e663a90c77dc16f9a5a68e8aadccd962d41a44e3de2f479f82edfc23 |
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