Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb00f8b71d65a7dc…

MALICIOUS

PDF

237.9 KB Created: 2022-03-28 20:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: 3f6bec2f2449f989b6366199ba147c7b SHA-1: d034e19c5bfd8996e012948a2295301d88deccf6 SHA-256: fb00f8b71d65a7dca4863f2ae899df684d51e60a5a287bfbd12133e80cdab0c8
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9433

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 http://kdsonline.org/userfiles/file/82176153440.pdf In PDF document text
    • http://blackswaninfotech.com/kcfinder/upload/files/44476269135.pdfIn PDF document text
    • http://rc-saty.cz/gais/image/file/gozatirasugiduwunijalo.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16226913deab37---tuwapawabegidagaxemobodir.pdfIn PDF document text
    • http://wccflooring.com/userfiles/files/lotomesofimoxixosegizinuf.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621238acb29fb---sedose.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16215a23ac0b92---fukasuwovabasatefilir.pdfIn PDF document text
    • https://tnmkor.com/FileData/ckfinder/files/20220207_13BB6531970CA81A.pdfIn PDF document text
    • http://www.sircom.org.br/tools/includes/kcfinder/upload/files/kusidobodemumadexaxuj.pdfIn PDF document text
    • http://www.primariasantana.ro/uploads/file/wefifuwavikewelav.pdfIn PDF document text
    • https://www.marthomattcollege.org/admin_panel/kcfinder/upload/files/53886349953.pdfIn PDF document text
    • http://tehla.eu/userfiles/file/sewoga.pdfIn PDF document text
    • https://jung.su/kcfinder/upload/files/35049147920.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620156d5df1bb---88014168639.pdfIn PDF document text
    • http://clubcalidad.pfsgrupo.com/formacion/profesores/userfiles/file/diwomorugivinetinesexupo.pdfIn PDF document text
    • http://dkkarsin.pl/img/upload/files/nebumunod.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e5fbe9269f---41064468047.pdfIn PDF document text
    • http://tetrafluoro.com/upload/files/xunabipibaz.pdfIn PDF document text
    • http://akgdsgfly.pretty-match.com/upload/files/fadan.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/3432352335.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/toselewosafipuzatob.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ae1b65238a---3208385188.pdfIn PDF document text
    • http://vividconcept.in/userfiles/file/liwif.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/ksi4pkvm2cvv4g16vlr2gbp4gh/kimirelomowifimelip.pdfIn PDF document text
    • http://gyermekhaz.hu/Content/site_images/files/wanumomawopuxuvarulij.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1622d158594dde---gulipala.pdfIn PDF document text
    • http://astorandblack.net/emailer/userfiles/file/wuvurabusatoluvajogisub.pdfIn PDF document text
    • https://nazragame.com/calisma2/files/uploads/dotuwakugadipawewalusedip.pdfIn PDF document text
    • http://kargiskola.ge/myadmin/ckeditor/ckfinder/userfiles/files/76755385975.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/99440532144.pdfIn PDF document text
    • http://alanurturizm.com/rsm/files/povozotugewu.pdfIn PDF document text
    • http://www.bestofasco.cz/upload/files/99401314726.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=the+chase+by+annie+dillard+audioPDF link annotation
    • 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_off00034894.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00034894.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00034894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34894 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00035faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35FAF 18624 bytes
SHA-256: 952503e7f52cfeebc3b77b52d69970c29722a1d14e100efd22fa210f3a597032
font_02_sfnt_off0003909f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3909F 10684 bytes
SHA-256: bde2d9acefd71741723a46c46536cdfd5cde18a0fcd6c3d3b0eb2e1da5164cde