Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c853b73f7a95551…

MALICIOUS

PDF

349.4 KB Created: 2022-02-17 00:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 859742ac1bddd82a176056c3c1b96609 SHA-1: 1552d7c8b2323c729986dedc927bc8bb7587575b SHA-256: 2c853b73f7a95551d38559e28c4b1c49aac8c15f8e88a5763cc0f953ef1cd6e8
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6533

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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=free+online+card+maker+no PDF link annotation
    • http://kerrya.com/ckfinder/userfiles/files/xanofadenebuxugos.pdfIn PDF document text
    • http://burfel.ru/upfiles/files/funigunovozozupe.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/28877486526.pdfIn PDF document text
    • http://daugiavanthienphuoc.com/media/ftp/file/repikuxuxafisebulopowira.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/48480329475.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ec989db3540---lipuwafemawobomulil.pdfIn PDF document text
    • https://webmenuplus.com/images/file/75572310320.pdfIn PDF document text
    • http://casier-a-bouteilles.com/file/pozodo.pdfIn PDF document text
    • http://juraganbajumurah.com/kcfinder/upload/files/58582641387.pdfIn PDF document text
    • https://self-storage.sg/images/uploadedimages/file/kewotemivaxufag.pdfIn PDF document text
    • http://euro-service.org/kcfinder/upload/images/vunapegigajadi.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615ed6d03e942---bukodinupuzaj.pdfIn PDF document text
    • https://cbmpolska.pl/www/js/kcfinder/upload/files/8475191670.pdfIn PDF document text
    • http://aerotechgroup.ru/img/outer/files/fudetujejafivudogidaso.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/vikopuxapedumakezumeso.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/83211247974.pdfIn PDF document text
    • http://shepardinteriordesign.com/rw/upload/file/83701969861.pdfIn PDF document text
    • http://confidenceagricare.com/assets/ckeditor/kcfinder/upload/files/69471255815.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16161ba22cbe4d---35817861052.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/julidomomodeboxafarox.pdfIn PDF document text
    • https://foodthings.us/userfiles/file/zewuf.pdfIn PDF document text
    • http://www.assistvaleur.co.jp/inc/kcfinder/upload/files/dabuwuvexejowi.pdfIn PDF document text
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/pebamuvujewanevuk.pdfIn PDF document text
    • http://mkngsp.ru/upload/files/8606135170.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/xatiku.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/25546288880.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615f49ec52748---winavezamesab.pdfIn PDF document text
    • http://phrabat.net/UserFiles/File/feluzamisite.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160f254e166c27---wajufumok.pdfIn PDF document text
    • https://promoform.coreform.it/uploads/file/67480860975.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a866e744308---87120774373.pdfIn PDF document text
    • https://srmhomes.com/images/bulk_images/files/49087198249.pdfIn PDF document text
    • http://hsound.ro/images/custom/file/takuli.pdfIn PDF document text
    • http://mps-india.com/userfiles/files/nufanedukurifeviwu.pdfIn PDF document text
    • http://seasonmediagroup.com/pic/file/maxupoxizupafurobikeges.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/jilubumo.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/87230408073.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f75f3f90007---8618140698.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/67074959561.pdfIn PDF document text
    • http://kanalizace-ul.cz/userfiles/file/36680171220.pdfIn PDF document text
    • http://atmaircenter.com/lb/userfiles/files/96854964848.pdfIn PDF document text
    • http://thuonghieutoancau.vn/uploads/files/nanife.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/94809318372.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/34804281365.pdfIn PDF document text
    • http://thibangoto.com/app/webroot/uploads/files/16625596238.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
    +4 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005062a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5062A 18728 bytes
SHA-256: 3acfedcffbffd593843b36444ca91b3d50e1925632f10f07f24f9daadd05d1e4
font_01_sfnt_off00053755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53755 10336 bytes
SHA-256: 255142a2483b67e7d1836b0f554567ca5af6d8b0d05d414f8c9757a577d9f7df
font_02_sfnt_off00054e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E84 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9