Malicious PDF — malware analysis report

Static analysis result for SHA-256 87579bc2452348a8…

MALICIOUS

PDF

244.7 KB Created: 2022-02-25 18:10:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: e241d317ef8070eb8c1cb7446e04dbbd SHA-1: cb54902dd3fbdcad0e77f5c71c2dfce180b0369d SHA-256: 87579bc2452348a8db0d22e6cd42f4fd0e5dc1c64925be5a4a01ffbaff80d9ce
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8354

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
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://cafij.co.za/XSRYdR1H?utm_term=students+attendance+management+system+using+android PDF link annotation
    • http://garderoba.sk/images/_file/keropatamigevejeri.pdfIn PDF document text
    • https://cometgroupinternational.com/ckeditor/ckfinder/userfiles/files/99247407172.pdfIn PDF document text
    • http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/77349339701.pdfIn PDF document text
    • http://newbusan.net/FileData/ckfinder/files/20210917_98E83464C2F196A3.pdfIn PDF document text
    • http://eqletstalk.com/uploads//files/202108131742407369.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f95a1b20580---sagubuleguwina.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/tuxemopudetojizujupu.pdfIn PDF document text
    • http://tsraccountants.nl/mailing/images/photo/file/nupojebanetuxuxezajumidiz.pdfIn PDF document text
    • https://tpk-m.ru/files/file/golexexogegobe.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/53554006636.pdfIn PDF document text
    • http://www.beverburcht.nl/upload/files/zofosawuzajugixozas.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-8-25/20210825054221127097.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16172faed5a8f4---35601051213.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/i83er2g8ad94kcnceogarn3rqb/bomagez.pdfIn PDF document text
    • https://rodolphe-blanchet.fr/Rodolphe/fckeditor/file/89758807565.pdfIn PDF document text
    • http://www.klub112.cz/upload/files/43301146886.pdfIn PDF document text
    • https://unchiulmihai.ro/files/fckeditor/file/pesupubosajamubafitaro.pdfIn PDF document text
    • http://dansecyr.ca/pdf/file/13876416622.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/69551026739.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/piwobufupifukijuxedeta.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/5c9ff56201f025de25cb58ba9d83c023/7597651251.pdfIn PDF document text
    • http://etiquettes-adhesives-bobine.fr/kcfinder/upload/files/68660092157.pdfIn PDF document text
    • https://klcmekatronik.com/ckfinder/userfiles/files/80818964594.pdfIn PDF document text
    • https://www.grdr.org/paidel/ckfinder/userfiles/files/87736530900.pdfIn PDF document text
    • http://wintec-samu.hu/uploads/files/titexudoresowesododetulib.pdfIn PDF document text
    • http://gulfapex.com/uploads/file/paxopatemozaretiforaxi.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610e6ce0433ee---vadavatu.pdfIn PDF document text
    • http://cellesekorea.com/ckupload/files/85698597777.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_off000367a7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000367a7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000367a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x367A7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00037ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37EC7 10956 bytes
SHA-256: 6d711da4cd626dbf8eb80ebd872926efe1f3bcd23330f68ddee1c9276b663b30
font_02_sfnt_off00039808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39808 16912 bytes
SHA-256: f897fd2f612a3cf4af64a22a4ab3a4d80e5685df63a1956ad758634a052f3ac1