Malicious PDF — malware analysis report

Static analysis result for SHA-256 5528e751bb699e47…

MALICIOUS

PDF

372.3 KB Created: 2022-03-11 13:53:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 9ee1bfaf71e6464dafbbc1f0efe900d1 SHA-1: 500fb6d069e8cf212c02d7def1376f6a2f450c6b SHA-256: 5528e751bb699e4740f8503b8236d986a00e85e99a49952dc5f70f3c248ca0f9
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6037

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://sunuf.co.za/XSRYdR1H?utm_term=aspca+nyc+report+abuse PDF link annotation
    • http://atletika-pardubice.cz/files/file/37690893885.pdfIn PDF document text
    • http://bwa.olsztyn.pl/bwa3/admin/kcfinder/upload/files/10402658116.pdfIn PDF document text
    • https://schneider-rozetki.su/kcfinder/upload/files/40129168923.pdfIn PDF document text
    • http://lousart.com.br/ckeditor/kcfinder/upload/files/94458421291.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/161fb0bb694dc0---pobujola.pdfIn PDF document text
    • http://k1a.ru/images/files/file/gozonafekafi.pdfIn PDF document text
    • http://recuva.kr/upload/fck_img/1646768690/file/82710360066.pdfIn PDF document text
    • https://www.retailexpert.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/dofisebiv.pdfIn PDF document text
    • http://swalaya.in/userfiles/file/89620495773.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/m1ae06bqtvinm92b9dkmf91ki6/72377568074.pdfIn PDF document text
    • https://registracijakoncar.com/webroot/js/ckfinder/userfiles/files/bupuxuwa.pdfIn PDF document text
    • https://expomediainc.com/upload/file/tozafamiv.pdfIn PDF document text
    • http://ahchala.com/img/file/80867470208.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/womozalenaduro.pdfIn PDF document text
    • http://wingmanplanningdemo.com/userfiles/files/84672135784.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/6630b9e0e5c0dc4ffbd98bea506e717f/46364764252.pdfIn PDF document text
    • https://www.procotech.be/ckeditor/kcfinder/upload/files/9362171305.pdfIn PDF document text
    • http://valk.dn.ua/js/kcfinder/upload/files/sowelajojonofam.pdfIn PDF document text
    • http://www.amoroso-ongakuin.com/upload/files/fizuxirekodivisolix.pdfIn PDF document text
    • http://dralituncer.net/userfiles/file/zudoxovimipevavar.pdfIn PDF document text
    • http://srisbs.com/kcfinder/upload/files/72532025120.pdfIn PDF document text
    • http://starma.pl/files/file/92065355319.pdfIn PDF document text
    • http://koreaticketland.com/userfile/file/16558886718.pdfIn PDF document text
    • http://metaphorcreators.com/kcfinder/upload/files/wefudafagefepafogivulu.pdfIn PDF document text
    • http://webminmax.com/userfiles/file/ginil.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16221851822a60---73369579321.pdfIn PDF document text
    • http://kurskodkb.ru/page_edit/_samples/userfiles/files/sozufuwesapizosobojuba.pdfIn PDF document text
    • https://samsungklima.net/upload/ckfinder/files/24784180842.pdfIn PDF document text
    • https://www.naturecare.com.au/kcfinder/upload/files/40610822574.pdfIn PDF document text
    • http://jump360.co/upload/files/20220220003311.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16213a73e27331---vivelilutaputuwebuxasaziw.pdfIn PDF document text
    • https://tndvn.com/js/ckfinder/userfiles/files/82750080800.pdfIn PDF document text
    • http://tourtraveltalk.com/app/webroot/js/kcfinder/upload/files/98004766934.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622483ca52a23---79006181216.pdfIn PDF document text
    • http://rivebistro.net/ckfinder/userfiles/files/42042019536.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/f3adb8476bcf32dede92c718e7afa7de/vuberejobudok.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_off00055cb1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00055cb1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55CB1 20604 bytes
SHA-256: 3edf4c0cd69040782ed945959cef9bc62bff99722a19e9c0d9311e6114d72acc
font_01_sfnt_off0005925b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5925B 10564 bytes
SHA-256: a58ccf1099fdb036bebc4977197669e2fc668988cf472855e9294460bed8bcc8
font_02_sfnt_off0005aa7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA7C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9