Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f277c04a053dd3…

MALICIOUS

PDF

103.2 KB Created: 2022-03-25 16:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: ffcbbe6ce5f232beba9ecdb8ba9e37d7 SHA-1: 917a7e08263bc599ac756711b221ed5231eb6916 SHA-256: a4f277c04a053dd38098f182368366ba5ff95e12592281fa5f0fd737bf24c15d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9563

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://tevav.co.za/XSRYdR1H?utm_term=solucionario+quimica+la+ciencia+central+brown+11+edicion+pdf PDF link annotation
    • http://crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/37779840012.pdfIn PDF document text
    • http://studiostocchi.eu/userfiles/files/34183503922.pdfIn PDF document text
    • http://blueyee.com/upload/file/181555512239.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/162204bf0b0330---39183425136.pdfIn PDF document text
    • https://otterdisplay.com/userfiles/file/luzivawaz.pdfIn PDF document text
    • http://agrariusnet.hu/admin/ckeditor/kcfinder/upload/files/tabepajolemiwesineris.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/inc1aj80nha7h0vh4qtk8m6jad/77185905042.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/vasaru.pdfIn PDF document text
    • https://www.crosstownnews.in/kcfinder/upload/files/xotovovitafepaxekirofuk.pdfIn PDF document text
    • http://vaithun.net/upload/files/xejuwiwinibazunebesota.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/zevoludewunuvo.pdfIn PDF document text
    • http://theshop24.com/userfiles/file/xiwejedibu.pdfIn PDF document text
    • http://sherpakhabar.com/dbros/public/ckeditor/kcfinder/upload/files/dezizokojivenix.pdfIn PDF document text
    • http://personaleducador.com.br/ckeditor/kcfinder/upload/files/22744150180.pdfIn PDF document text
    • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/xuzelopinuxubuzatote.pdfIn PDF document text
    • https://www.amc-lda.com/assets/kcfinder/upload/files/44382381546.pdfIn PDF document text
    • https://bwhe.in/ckfinder/userfiles/files/36550870381.pdfIn PDF document text
    • https://ktmcollege.org/public_html/userfiles/file/goxelogunovetanepapaxamo.pdfIn PDF document text
    • http://tmacfashion.com/ckfinder/userfiles/files/10369392210.pdfIn PDF document text
    • http://tvsatkrosno.pl/userfiles/file/6959353675.pdfIn PDF document text
    • http://jg-academy.com/uploads/FCKeditor/file/tosumabotiziniso.pdfIn PDF document text
    • http://tongchangkj.com/uploadfile/file///2022022704542944.pdfIn PDF document text
    • https://kultmotor.hu/images/files/sikoda.pdfIn PDF document text
    • http://nationalherbo.com/userfiles/file/42891323732.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/32493266733.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/40609746396.pdfIn PDF document text
    • http://www.louervendreaumaroc.com/kcfinder/upload/files/14773814947.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/ce64ca3e66172d2cfc3b0ada89934053/59611137999.pdfIn PDF document text
    • https://laval.gatr.ca/img/etablissements/files/pojuvimoziki.pdfIn PDF document text
    • http://22vek-omsk.ru/fck_editor_files/files/94658766832.pdfIn PDF document text
    • http://www.iharoskezmuvesek.hu/ckeditor/kcfinder/upload/files/4200141716.pdfIn PDF document text
    • http://globalcentral.net/contentupload/fckeditorUploads/organization_/file/xirakajetebuz.pdfIn PDF document text
    • http://ccshecea.org/upload/files/89499759376.pdfIn PDF document text
    • http://infotechloyalty.com/bot/ckfinder/uf/files/89961552410.pdfIn PDF document text
    • https://polenhosting.com/calisma2/files/uploads/64158587778.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/daniminogoru.pdfIn PDF document text
    • http://congress.bpv.su/content/files/files/jewusimodunafomubibo.pdfIn PDF document text
    • http://worldnaturalfood.com/image/upload/File/34909745712.pdfIn PDF document text
    • http://mwbright.com/upload_fck/file/2022-2-27/20220227181905446030.pdfIn PDF document text
    • https://yacusuke.uonuma-ph.jp/upload/save_image/file/55663808292.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/85934879381.pdfIn PDF document text
    • https://dm288.com/slicice/file/92800793368.pdfIn PDF document text
    • https://dreamcatchersdoodles.com/userfiles/files/fudap.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623a68272a5e5---vatejezalevomadafafaf.pdfIn PDF document text
    • http://makeyourpartnermelt.com/userfiles/file/nipokixawizutatobepij.pdfIn PDF document text
    • http://hiredriver.com/uploads/assets/files/19569190584.pdfIn PDF document text
    • http://headsaigonanhphat.com/media/ftp/file/71534416095.pdfIn PDF document text
    • http://commandhousecreations.com/uploads/files/rezabezapexeloxefixibu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    +7 more URL(s)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000121d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D4 21192 bytes
SHA-256: 9edb3aa3086f1566ab2c207c87c10c52bb8d8ec788132f88c571aa226d00f8d7
font_02_sfnt_off000158ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158AE 11212 bytes
SHA-256: be59b1e63c45da7605e7605bd75c791c27e259a2d4e1db190ad88b9fe9ea26ce
font_03_sfnt_off00017293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17293 16536 bytes
SHA-256: ab611eb84fc9695a4ef0cf8e22ea5393483871998cfc18313670af297b0e4560