Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f10fef42eb11ec…

MALICIOUS

PDF

377.5 KB Created: 2022-02-18 04:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: b34cb4b6858da98d35d2a307f600d6b5 SHA-1: 2bf26e1e6ab5820ee95876f5a62a726f30969411 SHA-256: a4f10fef42eb11eca6619efd71627c666a21321743153d52b812cf71904e2af1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5194

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://norin.co.za/XSRYdR1H?utm_term=aprendizaje+activo+libro+pdf PDF link annotation
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/27227883376.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/cmrmjhpr1fnos6ok7iplimbhn0/gidetew.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/84551885717.pdfIn PDF document text
    • http://braghieriarchitettura.com/userfiles/files/81207628208.pdfIn PDF document text
    • https://highfieldhousehotel.net/nbloom/fckuploads/file/peserikano.pdfIn PDF document text
    • https://tskrea.com/userfiles/file/nuxuxud.pdfIn PDF document text
    • http://nairmobilya.com/userfiles/file/91400493435.pdfIn PDF document text
    • http://merten-antik.su/kcfinder/upload/files/padegisajab.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161aa4b42e22fd---45825524885.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/sujavijobuf.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/94704380733.pdfIn PDF document text
    • https://xn--80aesyq.xn--p1ai/files/file/jamuvama.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/wavinakuwubir.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/2ddc2c8911e74cd40b298383f3766c64/taxigisegikekatopozipar.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/vupujixumuxabokokiwogidu.pdfIn PDF document text
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gafedugazupumepumi.pdfIn PDF document text
    • https://www.houseofwax.cz/kcfinder/upload/files/rojokuwalijirelaxerut.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/88886265495.pdfIn PDF document text
    • http://www.mofald-clpiu.gov.np/public/kcfinder/upload/files/dusuba.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/73419160188.pdfIn PDF document text
    • https://incense888.com/uploads/files/202111191831332812.pdfIn PDF document text
    • http://sterenstein.ru/userfiles/file/lutaxejujivifunuzugigajo.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/46987425728.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16203dc6049f2a---45529283592.pdfIn PDF document text
    • http://belcanto-evenements.com/media/files/27877545277.pdfIn PDF document text
    • http://thaide.org/userfiles/file/24699576518.pdfIn PDF document text
    • http://huynhgiabaohotel.com/uploads/FCK/file/wavesu.pdfIn PDF document text
    • http://starejsasporocila.igorgabrovec.eu/userfiles/file/zarumitevi.pdfIn PDF document text
    • http://optimaglobal.net/ckupload/files/lonasafapenulixu.pdfIn PDF document text
    • http://novosib-sport.ru/ckfinder/userfiles/files/39470952925.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/vogilebenegikotodun.pdfIn PDF document text
    • https://euforbiabulgaria.com/uploads/pages/files/zijafazekafikugineko.pdfIn PDF document text
    • https://rotterdampools.com/contents/files/sogomaxupiwotev.pdfIn PDF document text
    • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/5225014094.pdfIn PDF document text
    • http://daphongthuyhueminh.com/uploads/image/files/90603000255.pdfIn PDF document text
    • https://xtrafitcoaching.com/www/images/files/sorokoda.pdfIn PDF document text
    • https://jensbrode.de/files/file/rojaxev.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/60348648488.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616c404308945---22461426710.pdfIn PDF document text
    • https://kujainspectors.com/candyticket/uploads/page_images/files/85028501912.pdfIn PDF document text
    • http://zavalinka.by/var/upload/file/27747777093.pdfIn PDF document text
    • https://journalofcritique.com/ckdosyalari/upload/files/mumisaxafafozozega.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/b83e3fb79a9fb1262bbc93fa0f0d2da0/29936553646.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
    +2 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D7D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005849d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5849D 10820 bytes
SHA-256: d0b8b66d647d6999fe4f855f6f2252024e19d02bf504feae9bdccc84377d0ffe
font_02_sfnt_off00059d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D7F 21552 bytes
SHA-256: 6195ecdd7e191a7b5fa42359d58ca9ca38b7153ae351c943776f1e078fd53a87