Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e353b621ea44918…

MALICIOUS

PDF

438.2 KB Created: 2022-02-04 08:15:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: e23d34313941f5cceeaaa2614895d4dc SHA-1: b52c264843043f7a6b4be49615c5f0444564b8e2 SHA-256: 4e353b621ea449189492f1857d20be3fce30ecd8c08d974be484acc620d1c258
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5521

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://wirut.co.za/XSRYdR1H?utm_term=column+addition+practise+sheets PDF link annotation
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c62a8d0bcd9---jadujorozakupo.pdfIn PDF document text
    • https://gilbertems.com/videos/file/vinamel.pdfIn PDF document text
    • http://silexsys.com/ckeditor/kcfinder/upload/files/tanokigufapedetemaweb.pdfIn PDF document text
    • http://vivatbacchus.hu/files/file/53245040647.pdfIn PDF document text
    • http://doxetrilinh.com/media/ftp/file/nimukosusojixewitudasafam.pdfIn PDF document text
    • http://richardchong.com/userfiles/files/62845000332.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/161698ac49e978---62975110724.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/kexezijokuzipireretitapin.pdfIn PDF document text
    • http://petrovaskola.sk/userfiles/imagefile/xegudavibakituzomuxub.pdfIn PDF document text
    • http://delve-cr.com/uploads/golibasufofedasilabitu.pdfIn PDF document text
    • http://www.wiseyoga.nl/kcfinder/upload/files/dapemewetotezosedata.pdfIn PDF document text
    • http://machi-tomo.xyz/js/ckfinder/userfiles/files/zusiminipaxekaroravabupi.pdfIn PDF document text
    • https://thefencedocumentary.com/adminfiles/file/wuzizotugixobedulisodarug.pdfIn PDF document text
    • http://peneleos.pl/userfiles/file/bineromorizafedop.pdfIn PDF document text
    • https://rachelrom.com/rescontent/file/foravukolazakuvu.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021070306032622.pdfIn PDF document text
    • https://australiancaravancentre.com.au/application/third_party/ckfinder/userfiles/files/mejalakijasilu.pdfIn PDF document text
    • http://denkobarbell.com/_upload/files/numurixewotegikapile.pdfIn PDF document text
    • http://1hozain.ru/files/userfiles/files/gagaropikonubel.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/16839050084.pdfIn PDF document text
    • https://hotelexpert.ro/uploads/files/buwiro.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/92464319128.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/65334543990.pdfIn PDF document text
    • http://gowowdeli.com/uploads/files/gasivofigomowutoniletutu.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fc172032f53---sifufixexipu.pdfIn PDF document text
    • https://dazhonghua1688.com/ckfinder/userfiles/files/zijokanopexof.pdfIn PDF document text
    • http://emblem4home.com/UserFiles/Member/File/71210167617.pdfIn PDF document text
    • https://nepaltravelsandtrekking.com/userfiles/file/tizexedujevev.pdfIn PDF document text
    • http://villalapinetafavignana.it/userfiles/files/2322599057.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/dajopagupifolexut.pdfIn PDF document text
    • http://pietroquatriniarchitetto.eu/userfiles/files/bufopakidab.pdfIn PDF document text
    • http://recuva.kr/upload/fck_img/1636465869/file/xobopulivi.pdfIn PDF document text
    • https://thanaclusterwestgate.leaddeehub.com/userfiles/files/85197449117.pdfIn PDF document text
    • https://www.hsbofmn.com/ckfinder/userfiles/files/javazatonutefuja.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00066960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66960 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006807b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6807B 17992 bytes
SHA-256: 3afcbfe56583b086ce3796918ea0e215fdb09b94734ba25d742f454da10227b6
font_02_sfnt_off0006afba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFBA 10912 bytes
SHA-256: 592424325b90d6cf9e2539b120a53dd579ef93533facea5c74c53b774713cbcf