Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b9ff0c9414f0c3…

MALICIOUS

PDF

406.4 KB Created: 2022-03-25 01:00:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: f2eb193c10f75a24003d57af1f6b3c56 SHA-1: f2e08cb1040c30f507b70eb1551dc3e7ed06fd2a SHA-256: a8b9ff0c9414f0c3f0680ef4cf66af7f1ed2f9d2aa0c9452d75abe4821036dab
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5598

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://mifuj.co.za/XSRYdR1H?utm_term=los+mejores+chistes+pdf PDF link annotation
    • http://synfarm.com/upload/files/rinekatobepugifukirujog.pdfIn PDF document text
    • http://isvpro.com/custom/files/savewovileto.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/1fa6869eef64362ac1dea5f6b45b93f9/15854491033.pdfIn PDF document text
    • http://rainternacional.com/userfiles/file/pesiratot.pdfIn PDF document text
    • http://ckudzcssffhhj.handysociality.com/upload/files/lopamufekukukitigotonesa.pdfIn PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/54777311788.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1622677796c128---fibonegepasuze.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/70b27476a63e94c5256f431b0f4fa8f8/voxadufovofazuwijixema.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/88d7a3d9f4dca6beb74e3ae05bde24c1/vokuwogepofukuwenoxutaw.pdfIn PDF document text
    • https://mcdelandes.ca/uploads/file/85154598331.pdfIn PDF document text
    • http://csc0311.com/userfiles/file/20220210153422_iwh59b.pdfIn PDF document text
    • http://kfgame.snailgame.ru/upload/files/20220214092310.pdfIn PDF document text
    • http://giovanninociti.com/userfiles/files/44883922550.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1621409be8b48b---74947663052.pdfIn PDF document text
    • http://kondicionery-lobnya.ru/upload_picture/file/pituvimolokisifut.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/tolinamobitasofobe.pdfIn PDF document text
    • http://distant-property.ru/fck_editor_files/files/1941823705.pdfIn PDF document text
    • http://specel.kz/app/webroot/js/kcfinder/upload/files/7691685144.pdfIn PDF document text
    • https://afmiletisim.com/resimler/files/didopidaxivawepikiwamuke.pdfIn PDF document text
    • http://conserviabd.com/assets/ckeditor/kcfinder/upload/files/vamizojevajimivug.pdfIn PDF document text
    • http://sdruzeniprojablonne.cz/userfiles/files/gejik.pdfIn PDF document text
    • http://brette-animation.com/userfiles/file/39548018079.pdfIn PDF document text
    • https://tailieuboiduong.com/uploads/files/xiwunexe.pdfIn PDF document text
    • https://hairidol.isme.us/images/file/viwafexaxigajuzamunore.pdfIn PDF document text
    • https://aicpwdosaeast.com/ckfinder/userfiles/files/96214016982.pdfIn PDF document text
    • http://kulukaubandus.ee/files/filemanager/files/57737302911.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c479c364da---28110027884.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20220305_A2CE8E2AB9F04323.pdfIn PDF document text
    • http://gdgom.com/upload/file/220216081734457456vp3cum8eljsz.pdfIn PDF document text
    • https://gift2goa.com/ckfinder/userfiles/files/60122492046.pdfIn PDF document text
    • https://hebatkeren88.com/contents/files/soliwidilifizumo.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1622024ee72284---75514580339.pdfIn PDF document text
    • http://www.extoskoko.co.jp/js/kcfinder/upload/files/zujen.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/64350987743.pdfIn PDF document text
    • http://www.acs-pack.fr/kcfinder/upload/files/ririlemokarodivavusazawuw.pdfIn PDF document text
    • http://okna-stv.ru/userfiles/files/vowelosekugadiwuzizajulu.pdfIn PDF document text
    • http://helder-effect.nl/userfiles/file/40648975616.pdfIn PDF document text
    • http://pspectr.ru/userfiles/file/10645031825.pdfIn PDF document text
    • http://kme-kme.cz/files/file/jomilinuvupexamunitijepub.pdfIn PDF document text
    • https://www.acv-verdun.fr/kcfinder/upload/files/kodalo.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 extracted file (font_00_sfnt_off0005e6b3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005e6b3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005e6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6B3 10660 bytes
SHA-256: 0525d98f0248199794e6dd348253f004da335d1573bd9522894876f629b66cd6
font_01_sfnt_off0005ff16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF16 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00061635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61635 20100 bytes
SHA-256: 19834341e2a9da207050a30e57f07d7f3983bb3a9fee5befa3c7549c6c265374