PDF malware analysis — malicious · 5d814f611e25a26c

MALICIOUS

PDF

71.3 KB Created: 2021-10-02 21:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18

MD5: 1f5c273eb18d0722ab10411f85879201 SHA-1: d85ba78d7843836ab33ca6af996aacddbc3d1ecb SHA-256: 5d814f611e25a26cc04c2470783f6e5e9ab9032eadb7c7204cdf45f3a161e841

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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://crewmak.ru/uplcv?utm_term=when+you+yawn+does+it+mean+you+are+tired PDF link annotation
- http://grupophi.es/uploads/files/91467972050.pdfIn PDF document text
- http://kunjipsc.com/uploads/files/dajunobavus.pdfIn PDF document text
- http://master-sign.ru/ckfinder/userfiles/files/34072602752.pdfIn PDF document text
- http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/nufufijos.pdfIn PDF document text
- http://stavclearing.ru/upload/files/87506444708.pdfIn PDF document text
- https://bya-ingenieria.com/ckfinder/userfiles/files/joxiwosejiroriraxomewe.pdfIn PDF document text
- http://konberdbio.com/upload/files/75664562158.pdfIn PDF document text
- http://handbook.hu/upload/page/file/ruzozunutagoxabagilevu.pdfIn PDF document text
- http://www.uc-kushiro.net/images/library/File/47932894982.pdfIn PDF document text
- https://tezerwatch.com/file/upload/files/09-09-05-29-07-55.pdfIn PDF document text
- https://rlmahtani.com/userfiles/files/nevenokifibizutifuzozaxan.pdfIn PDF document text
- http://potentialdesign.cn/userfiles/file/1630542056.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/58ed018c29d67699f5b0db4fda9ad7aa/zivikivudosula.pdfIn PDF document text
- https://lodoshosting.com/calisma2/files/uploads/pukupa.pdfIn PDF document text
- https://mgs-on-track.com/app/webroot/userfiles/file/popojufivevum.pdfIn PDF document text
- https://delphin-restaurant.com/ckfinder/upload/files/vinalelevupolasipir.pdfIn PDF document text
- http://bftt.marketsearching.com/upload/files/dobigakagivanaxo.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c27f139605---gidevijoli.pdfIn PDF document text
- https://gtijsr.com/userfiles/file/pakidedugono.pdfIn PDF document text
- http://intrinhgia.com/admin/webroot/upload/image/files/xalagujigezukuzewenokedes.pdfIn PDF document text
- http://1000projects.ru/upload_picture/file/jijewivisajizuned.pdfIn PDF document text
- http://pspectr.ru/userfiles/file/92704443080.pdfIn PDF document text
- https://littleedupark.com/ckfinder/userfiles/files/82689050237.pdfIn PDF document text
- https://euronet.stonavka.cz/webpagebuilder/ckfinder/userfiles/files/67108814107.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_off0000b360.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB360	10760 bytes
SHA-256: `af4c1d26ec56bb8f64e58b5ed576360975c6b4d5625b78bd58a26a7d078184bd`
`font_01_sfnt_off0000cc02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC02	16916 bytes
SHA-256: `d92ebd71e1a69d74fa0f0c5598ae754f7bf907dde54ea1d3d7be9c1a73159947`
`font_02_sfnt_off0000f6e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6E9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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