PDF malware analysis — malicious · 793673a50629d691

MALICIOUS

PDF

69.5 KB Created: 2021-10-04 08:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14

MD5: 5a0517c3d0e5a21e5202ad9743900eb8 SHA-1: e8104db40760d363da523917134ff6fd14eb34b1 SHA-256: 793673a50629d69103e1260c12ac40e35f010aee86c6f1f9e240382337b28129

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9965

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF 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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://pistant.ru/uplcv?utm_term=english+name+with+w PDF link annotation
- http://encino.kopanramen.com/uploads/files/18623604610.pdfIn PDF document text
- http://bitree.net/ckfinder/userfiles/files/40006265772.pdfIn PDF document text
- http://scsychem.com/upload/files/87943063371.pdfIn PDF document text
- http://fgosvo.ru/files/files/80911010524.pdfIn PDF document text
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/5a02a8dec10c1ba574a09d615bc205b5/9631599232.pdfIn PDF document text
- https://livredart.com/ckfinder/userfiles/files/56726310785.pdfIn PDF document text
- https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/81496c4aaa5bf3c0d0c1d3c50653900e/juvisotuponuj.pdfIn PDF document text
- https://mapithanhcong.com/upload/ck/files/katitolupu.pdfIn PDF document text
- http://mcenterdk.ru/fck_editor_files/files/leledetorilako.pdfIn PDF document text
- https://sikahaiphong.com/images/news/files/zabetetub.pdfIn PDF document text
- https://andhimazhai.com/images/files/kurufaganovebuwamikon.pdfIn PDF document text
- http://chikatere.com/Upload/files/zidoladeni.pdfIn PDF document text
- http://grabnerestriche.at/12181807033.pdfIn PDF document text
- https://sunkamalzemecilik.com/userfiles/file/jakuxezelama.pdfIn PDF document text
- https://medius.sk/userfiles/file/zuvufalolimun.pdfIn PDF document text
- http://wonderpanel.com/app/webroot/img/file/nuxone.pdfIn PDF document text
- https://ezsprinting.com/userfiles/file/xaruniviwusiwedawivenivi.pdfIn PDF document text
- https://anthonygillant.com/userfiles/file/gapegetesuwum.pdfIn PDF document text
- http://paitoonbox.com/userfiles/files/gijixule.pdfIn PDF document text
- http://beauty214.com/uploads/files/202109021416238474.pdfIn PDF document text
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/213qqfhgmnhul01asqc7ool730/10949545378.pdfIn PDF document text
- http://dmhu.eu/uploads/uplib/file/zojimipagi.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_off0000ae3c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE3C	10404 bytes
SHA-256: `efc58ef2e63343bbbb5ee78dbac983af33d588cc3f3b99b7c39e8fb263f1b453`
`font_01_sfnt_off0000c595.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC595	17160 bytes
SHA-256: `e8568f2e3ec34c85024efdadc4c56ce4ec4530372276a517c1e400b2f819707d`
`font_02_sfnt_off0000f136.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF136	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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