Malicious PDF — malware analysis report

Static analysis result for SHA-256 624a4f161a16f8cb…

MALICIOUS

PDF

220.5 KB Created: 2022-02-14 18:02:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 8e4736a8de0222ab659eaae7b7b7f385 SHA-1: f8fcf13f131a29c0aeaf8f8bf9cd0ee79ad87d19 SHA-256: 624a4f161a16f8cbc23efae22422e546074ac1930e325bef31aeb986d8311f5a
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6500

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://yubit.co.za/XSRYdR1H?utm_term=confluence+wiki+page+templates PDF link annotation
    • http://pes.edu.mn/ckfinder/userfiles/files/71812804266.pdfIn PDF document text
    • https://atarentacarburdur.com/userfiles/file/povatazuwib.pdfIn PDF document text
    • https://mmeasar.com/mmeasarfiles/file/pubikotegajaxutazu.pdfIn PDF document text
    • http://d-innovation.com/upload/files/40722892165.pdfIn PDF document text
    • http://lehnerkom.de/images/uploaded/file/26410192594.pdfIn PDF document text
    • https://noithatkuongthinh.com/uploads/files/botujidejerupulokamenexan.pdfIn PDF document text
    • http://wuchem.com/upload/files/49916294022.pdfIn PDF document text
    • http://eecca.stocker-development.com/uploads/ckfinder/files/46941133157.pdfIn PDF document text
    • https://limblength-sldf.com/userfiles/file/sefenibididitat.pdfIn PDF document text
    • http://divorceinhungary.hu/kcfinder/upload/files/80472831193.pdfIn PDF document text
    • http://headrepublic.pl/images/files/2112753672.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161c7eca405547---palutabafagufutaleja.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16134e7879e3a2---vesenoralowapot.pdfIn PDF document text
    • http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/65122178127.pdfIn PDF document text
    • http://daotaonhaccong.com/uploads/userfiles/file/zebudatodutupi.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16162353742832---36063528195.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/17403931693.pdfIn PDF document text
    • http://sushibelovo.ru/files/80448433956.pdfIn PDF document text
    • http://palirna-frydek.cz/uploaded/file/minisibamobifoka.pdfIn PDF document text
    • http://gocoachfox.com/userfiles/file/56050732385.pdfIn PDF document text
    • https://nurea.se/currency/userfiles/file/poradukamevimu.pdfIn PDF document text
    • https://jagominum.com/contents/files/vukofimikizipojiguk.pdfIn PDF document text
    • https://www.jornaloflorense.com.br/admin/ckeditor/kcfinder/upload/files/pewiranamorevifiwowu.pdfIn PDF document text
    • https://dottoridegregorio.it/public/file/ximap.pdfIn PDF document text
    • https://pfollowers.com/ci/userfiles/files/49835892797.pdfIn PDF document text
    • http://canadanur.com/resimler/files/dovafitesadujevutezule.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/41723381052.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/bbd7vpk86vj4chi130a519hdrq/rikarimu.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/27509349730.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/81808933556.pdfIn PDF document text
    • http://kurdumovldpr.ru/uploads/files/27414705381.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/62773116144.pdfIn PDF document text
    • https://rozetki-merten.su/kcfinder/upload/files/judupukubajupamanatupas.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/31671588914.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/80715899145.pdfIn PDF document text
    • https://trafiktehaklarim.org/kcfinder/upload/files/35758047458.pdfIn PDF document text
    • https://thedigitalsystems.com/userfiles/file/35499567716.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/juxupo.pdfIn PDF document text
    • http://www.halabicaguitars.com/gfx/administration/js/ckeditor/kcfinder/upload/files/97399582316.pdfIn PDF document text
    • http://santamariamikado.com/uploads/files/zavejoputojetubajironuged.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_off000300b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300B3 11032 bytes
SHA-256: 46876ae232499dad975bddb2cac4ee054ae8d3ee05b75528b39746d763c59f30
font_01_sfnt_off00031a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A7C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00033197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33197 18596 bytes
SHA-256: 8e0e260c00857ee2decae388505480e4b164007b150c40cd46e7a2766867c509