PDF malware analysis — malicious · 478db478e7733838

MALICIOUS

PDF

79.6 KB Created: 2021-10-05 19:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20

MD5: c7dacac8c32fb9bf80f50f645801654a SHA-1: d337cdf219582e86ab3e998953efa7a816008cef SHA-256: 478db478e7733838a5f11c35e44680d9ce06b264b38d8269df150ab514e17efa

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9968

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://catamma.ru/uplcv?utm_term=constructor+calling+in+inheritance PDF link annotation
- http://metaglas.kr/userData/board/file/xewubuzimikoxiwopokivij.pdfIn PDF document text
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd78ef3f3c---71713989565.pdfIn PDF document text
- https://alkalacarservice.com/public_html/userfiles/file/tideranibazevafuxumewoj.pdfIn PDF document text
- http://quartierdete.fr/uploads/fckeditor/file/7554331475.pdfIn PDF document text
- https://rizecanreklam.com/images/file/64023631076.pdfIn PDF document text
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/55f6b61e1ff9be457bd2503c411efbe5/gotekagasap.pdfIn PDF document text
- http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614086883aefb---32738524991.pdfIn PDF document text
- http://budaikepkeret.hu/uploads/file/ketufopejexijakikeratuw.pdfIn PDF document text
- http://trip-sale.ru/userfiles/file/sazilopivovof.pdfIn PDF document text
- http://www.pavimentosyreformasferlu.es/ckfinder/userfiles/files/84816612425.pdfIn PDF document text
- http://toflight.mobi/attachment/ckeditor/files/523876e638f8ee1df6ebdeba9e4b9015.pdfIn PDF document text
- http://radio-salsa.fr/php/rs/filesupload/file/80045799810.pdfIn PDF document text
- http://daejonggyoyc.com/userfiles/file/20210919052621.pdfIn PDF document text
- https://fibaquitaine.fr/cebatrama/userfiles/files/16813490126.pdfIn PDF document text
- http://www.corazondelsol.es/ckfinder/userfiles/files/gabujir.pdfIn PDF document text
- http://architettorobertafasola.eu/userfiles/files/wilejamofibulo.pdfIn PDF document text
- http://tangneylaw.com/admin/images/file/libodaloravarikufobavo.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16151da6024374---tirafovekisokigipejeje.pdfIn PDF document text
- https://ecowaytechnologies.com/ckfinder/userfiles/files/tugijebifuroruz.pdfIn PDF document text
- http://brenno-tojestto.pl/userfiles/file/29507197243.pdfIn PDF document text
- https://nstoplana.rs/ckfinder/userfiles/files/kagitiradexulewepexifa.pdfIn PDF document text
- https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/13349313626.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_off0000cd99.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD99	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e5ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5AB	19372 bytes
SHA-256: `e5461f8fce59239aa7ce155da0c022c8f9283744dd6edc67acdc6a9c9e5c4eeb`
`font_02_sfnt_off000118b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118B3	10640 bytes
SHA-256: `2bb435f1b5d57ae1174ca981c82feb76f5eccc557ba8d6635c3e99cb64d07e00`

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