PDF malware analysis — malicious · af28c77a4dae110c

MALICIOUS

PDF

70.8 KB Created: 2021-12-19 01:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22

MD5: 7da95c124e599dd6318249a9b41fe8d8 SHA-1: 047342aeef544a0e798edb91cdf64c5261bd45c4 SHA-256: af28c77a4dae110cfb05e71814d86037f2942bbfad21c7ece39f718a4141b185

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9978

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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 http://www.solarwindependence.com/ckfinder/userfiles/files/81166230350.pdf In PDF document text
- https://inmaabiladi.com/userfiles/files/zuwenanarubiles.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1617107ff5e648---93643875481.pdfIn PDF document text
- https://insolite.lu/img/userfiles/files/46398925310.pdfIn PDF document text
- http://chinazzjx.com/d/files/tavejinosotejomuleku.pdfIn PDF document text
- https://training-access.com/upload/file/45058889199.pdfIn PDF document text
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/da49024d633856781b9ab6e23d3c4eb8/tuvuzowifalelibos.pdfIn PDF document text
- http://sieuthibds.net/images/files/44388975169.pdfIn PDF document text
- https://almudenafernandez.co/ckfinder/userfiles/Files/pevexaroputejisuv.pdfIn PDF document text
- http://jl-vacuum.com/upload/files/37950835933.pdfIn PDF document text
- https://nera.net/css/other/ckeditor/kcfinder/upload/files/bopimuziratobedamer.pdfIn PDF document text
- http://refmexgl.com/web/uploads/assets/userfiles/file/mabotuvolejazarafumipek.pdfIn PDF document text
- http://maraulsan.com/ckfinder/userfiles/files/80687080088.pdfIn PDF document text
- https://dolmalatrek.com/userfiles/file/239479445.pdfIn PDF document text
- http://birons.net/wp-content/plugins/super-forms/uploads/php/files/ed8b26cf634f9fbdb7c23cf548e6403c/jujivanorak.pdfIn PDF document text
- https://hanyauntuktesting.com/contents/files/10937342735.pdfIn PDF document text
- http://dywin.com/uploadfile/files/37157926666.pdfIn PDF document text
- https://idealist.ro/userfiles/file/93625439047.pdfIn PDF document text
- http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/komalululewasedofavar.pdfIn PDF document text
- https://ever.dacola.com/upload/files/39080007306.pdfIn PDF document text
- https://marblo.marblobaths.ph/app/webroot/img/files/20127044639.pdfIn PDF document text
- http://xn--42cfa4ewb0a0b3fwh.com/imageupload/files/movopixalafexa.pdfIn PDF document text
- http://sinorarechem.com/upload/files/kejewamazus.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/6Zflnl449io/uplcv?utm_term=what+kind+of+oil+does+a+2006+scion+xb+takePDF link annotation
- 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_off0000ac0d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAC0D	18272 bytes
SHA-256: `a6aa219b0e6db156c445e2c06573c4295a9a95347bb2d13add2e508c90df3d3c`
`font_01_sfnt_off0000dc2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC2B	11208 bytes
SHA-256: `314bb03ccdd86775a532f108030f8303a59c7d0b58103ecb7f5ecef2fbf8f2bb`
`font_02_sfnt_off0000f66c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF66C	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`

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