Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87f861334da4bb4…

MALICIOUS

PDF

258.8 KB Created: 2022-03-19 19:00:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: da1129f00f53adb79fa11c00659190d3 SHA-1: c4406ccad0944f9d720356c7d7774d48d3be145f SHA-256: f87f861334da4bb4a9e0ea4e35a20df377aa8edcd0bc5b0ca2bd30438fa005ba
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6946

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
  • 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.
  • 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://colod.co.za/XSRYdR1H?utm_term=barrett+esophagus+guidelines PDF link annotation
    • https://dpt-mh.com/uploads/news/files/pikukazirojiwu.pdfIn PDF document text
    • https://pharma-tools.eu/galeria/file/62504915733.pdfIn PDF document text
    • https://matras-matrasych96.ru/admin/ckfinder/userfiles/files/26222616773.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/puritizuturunugupojedoxud.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/10630758357.pdfIn PDF document text
    • http://shmgec.com/Uploadfiles/files/53693961600.pdfIn PDF document text
    • http://modern-pro.ru/files/file/denukuvososugitinimop.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/64752660268.pdfIn PDF document text
    • http://studiocalderini.it/userfiles/files/makefikekuxabebanukog.pdfIn PDF document text
    • https://4dapi.glg228.info/app/webroot/uploads/files/visumel.pdfIn PDF document text
    • http://jg-academy.com/uploads/FCKeditor/file/63538435210.pdfIn PDF document text
    • https://pharma-tools.pl/galeria/file/97853077724.pdfIn PDF document text
    • http://arenabilardo.com/data/_files/83171738044.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/162319ee58bdbc---joxoxegebibobixez.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fc0c02bb9b3---gazibokobu.pdfIn PDF document text
    • http://nail-free.com/ckfinder/userfiles/files/79114667969.pdfIn PDF document text
    • http://savytrading.com/userfiles/file/pemifoto.pdfIn PDF document text
    • https://gemwares.artchy.com/userfiles/file/sogimufobozilelorejapex.pdfIn PDF document text
    • http://omegabg.net/media/ck/files/3525081723.pdfIn PDF document text
    • https://lp-tracking.com/userfiles/file/5388711343.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/ntbm3pjomo3kf6ds1jf7a6gmq1/sisexu.pdfIn PDF document text
    • https://wildpflanzen-planung.de/file/bufifelo.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/970acb9dd02dee5591f291582ab435a8/nabofawe.pdfIn PDF document text
    • http://tehnaplus.mk/tehnaplus/kcfinder/upload/files/6330166583.pdfIn PDF document text
    • https://biroestarsa.hu/uploads/file/43828836634.pdfIn PDF document text
    • http://blackswaninfotech.com/kcfinder/upload/files/26784963679.pdfIn PDF document text
    • http://cmoxgermany.com/upimages/file/89173064897.pdfIn PDF document text
    • http://creacionesfullpack.com/kcfinder/upload/files/93737021548.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/46697375043.pdfIn PDF document text
    • http://evolution-dev.com/file_media/file_image/file/53416991534.pdfIn PDF document text
    • http://lixupeng.com/uploads/files/43432912644.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_off00039910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39910 10824 bytes
SHA-256: 833562436c6661a0872299f7537c17d481da2efb872df77e740d6b69160e3022
font_01_sfnt_off0003b1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B1C4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003c8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C8DF 19316 bytes
SHA-256: 98db73e871e68e61930a0195093fafaa67148953abb056817a18fde364cf8778