PDF malware analysis — malicious · 5d8a4aa5728db675

MALICIOUS

PDF

67.8 KB Created: 2021-10-03 20:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18

MD5: 3f9f32f91da40585c3156e67b18746b5 SHA-1: 23034f267d2aa22e2b28e4e3578bef387909d9a1 SHA-256: 5d8a4aa5728db675e50ddc9438418b2ddcd6637473fcbee1782ef16747075683

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9973

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://appvid.eus/userfiles/files/7684602869.pdf In PDF document text
- http://kondicionery-dolgoprudny.ru/upload_picture/file/22072519497.pdfIn PDF document text
- http://countryclaim.cz/userfiles/file/lepubepoxisalepisipedu.pdfIn PDF document text
- https://www.babetravelling.com/ckfinder/userfiles2/files/31673741431.pdfIn PDF document text
- http://www.cerel.eu/images/wyswig_images/file/figago.pdfIn PDF document text
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/686f352003a98cff0f56b79ad7c61a44/bisipaneb.pdfIn PDF document text
- http://budka39.ru/files/1225460589.pdfIn PDF document text
- https://membermimpi.com/contents/files/57385368314.pdfIn PDF document text
- https://stmarys-perthamboy.com/upload/File/pivagamaxoni.pdfIn PDF document text
- http://emanuelarombiarchitetto.eu/userfiles/files/zawazuvitoronifadonujo.pdfIn PDF document text
- http://emons-verlag.net/testarea/cwsCMSlight/media/files/nesabak.pdfIn PDF document text
- https://sledovani2.gpshlidac.cz/www/userfiles/files/jubukamisidubisebaperisep.pdfIn PDF document text
- https://larrialdiak.es/files/galeria/files/77385416703.pdfIn PDF document text
- http://www.fuchingrading.com/upload/file/weguwexuviwesavuzogozejaj.pdfIn PDF document text
- http://rapet.hu/files/1310417469.pdfIn PDF document text
- http://szyoujin.com/UploadFile/file/20211003125951494.pdfIn PDF document text
- http://elfuklid.cz/foto/Image/file/51987485682.pdfIn PDF document text
- https://lostfoundglobal.com/userfiles/file/gedemibuxapukuwoduke.pdfIn PDF document text
- http://luckysim.com/userfiles/file/gubakopa.pdfIn PDF document text
- https://snoman.mb.ca/ckfinder/userfiles/files/wezate.pdfIn PDF document text
- http://www.nagsa.es/ckfinder/userfiles/files/4217685617.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=places+to+visit+in+torontoPDF 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_off0000abcb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xABCB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000c3dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC3DD	15268 bytes
SHA-256: `e2209b945a841977566da21a1e9935a8aaccce68849bb34669346ab9ae81598f`
`font_02_sfnt_off0000eaa5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAA5	10292 bytes
SHA-256: `7960b3b7c425e71183c1a76afa591c29d4985bcdeb8508684a14ea2bbf389af7`

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