MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document employs a social engineering lure, instructing the user to install a browser extension or update to view content, a common tactic for credential theft or malware delivery. The document contains numerous links to external sites, many hosted on compromised WordPress installations, suggesting a distribution network for malicious content. While no scripts were directly extracted, the presence of PDF-specific heuristics and the overall structure indicate a malicious intent, likely involving exploitation or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://medvor.ru/uplcv?utm_term=onlinemeded+notes+download PDF link annotation
- http://phuquytravel.com/nguyenvanlinh/files/vumafex.pdfIn PDF document text
- http://nuraski.pl/wsg/userfiles/jatavore.pdfIn PDF document text
- http://bilmatbasim.com/userfiles/file/93550709939.pdfIn PDF document text
- http://elsekmont.eu/userfiles/file/rezimowiwedokirizoza.pdfIn PDF document text
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/5000b2b6a4a0c541bb235690b0d77fcd/82443672457.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607452eae2014---51753461505.pdfIn PDF document text
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/02e6feb386e62d5fb9c7dfb13177503c/8043944363.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/f50c595f37af0a2c2d09d8e179f48f75/wezogekanivogob.pdfIn PDF document text
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/rs7092k3jcer53fhlpjomjlai5/99967599523.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704d835914c---jukudelevorametefusej.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/53956ea70861e2db0564e2b4bf762982/42252438465.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/691343ccbcd97f332e514250b2646a63/murafowij.pdfIn PDF document text
- https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/plnae9f7m7pk3f2ouc2lucavka/tirewisavanamebidad.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e462.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE462 | 4996 bytes |
SHA-256: 2b6e0a828dbe9f5c45cbc0b71f53a581a86eaed3fad9d371be6b97a001a308f2 |
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font_01_sfnt_off0000f55b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF55B | 10576 bytes |
SHA-256: 7b7548fb79fd5ed4587cfa266260a4b0d0fe1a6c361d602a180e389f59eaea3b |
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