Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9917a3dd722f4fc…

MALICIOUS

PDF

99.5 KB Created: 2022-01-27 11:51:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 4b664f5545f8c24fe4aa9041e03e60ca SHA-1: 474867d8b923d0147eb99e279cb061e10f510571 SHA-256: f9917a3dd722f4fc5c2af15d86ac2335c441cb336203a3c5926fc7aa9d6119a8
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9852

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://wirut.co.za/XSRYdR1H?utm_term=sscanf+vs+stringstream+performance PDF link annotation
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fa08f212f9---78394166663.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/nodexuzozilisotona.pdfIn PDF document text
    • https://davaocarrental.com/images/file/wuwokor.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/kemawabemel.pdfIn PDF document text
    • http://gemmacapitalgroup.com/foto/file/xojuva.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/35362618060.pdfIn PDF document text
    • http://desushibar.com/userfiles/file/13745250003.pdfIn PDF document text
    • http://kisito.com/userfiles/file/46987122554.pdfIn PDF document text
    • http://bsbcarpet.com/userfiles/file/40701616643.pdfIn PDF document text
    • https://songhong-thudo.com/img/files/nobinepodowexezamukile.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/cf6fc57deb9beae9cdea388009c03c6c/2589666697.pdfIn PDF document text
    • http://phanvienphianam.com/uploads/userfiles/file/48138762744.pdfIn PDF document text
    • https://xn--nmqu14inmf.com/upload/files/rujakotatiwojixilofub.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/8043776984.pdfIn PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/35323286065.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/f4tbnhq4qilechm077tigtqrj1/sovawibuviba.pdfIn PDF document text
    • http://zimmerei-possert.at/56026950781.pdfIn PDF document text
    • https://vietnam-pump.com/userfiles/file/51051713673.pdfIn PDF document text
    • https://giridhareye.org/ckfinder/userfiles/files/89675654246.pdfIn PDF document text
    • http://erfanekeshmiri.ir/userfiles/file/72691115789.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16198df63e0c1a---sowivedupos.pdfIn PDF document text
    • https://weilmclainboiler.ca/fck_upload/file/31322785846.pdfIn PDF document text
    • http://fence-alarm.com/userfiles/files/widipeziwodatiri.pdfIn PDF document text
    • http://flygarfield.net/userfiles/file/pibijosozuvenefu.pdfIn PDF document text
    • https://apgr.eu/UserFiles/file/denufakununuzebob.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/hchskvmgsdpchonmgt44284jj1/jepexo.pdfIn PDF document text
    • https://stmarys-perthamboy.com/upload/File/tadofore.pdfIn PDF document text
    • https://www.jainajewellers.com/kcfinder/upload/files/wamuvonesapite.pdfIn PDF document text
    • https://www.aukuras.org/ckfinder/userfiles/files/wubuzuwuwijaganum.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/lelipabipijopivoluk.pdfIn PDF document text
    • http://goldia.cz/data/file/repitilup.pdfIn PDF document text
    • http://lsphc.com/userfiles/file///29477668443.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/janenikozutakafegad.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/3c6g37u813aqgtie0ehhdg9o72/78049070096.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/vasewagutimaponawesarumin.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/wuwuregi.pdfIn PDF document text
    • http://eldmsh1.ru/js/ckfinder/userfiles/files/mubujosuxujaxudun.pdfIn PDF document text
    • http://ver9ctrl.sonikgps.com/ckfinder/userfiles/files/42657438815.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.

FilenameKindSourceSize
font_00_sfnt_off000123f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F8 16496 bytes
SHA-256: 07c06a70fb0e3fc3756089228e2966f3f327c1f77321caa4a590c581c869c14b
font_01_sfnt_off00014f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F22 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000165c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x165C6 10916 bytes
SHA-256: 6b28d77be3d149bc4fd7624d8168581d674ab786a47f901f6dba83bbda29a111

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