Malicious PDF — malware analysis report

Static analysis result for SHA-256 8756cb2e6fe67658…

MALICIOUS

PDF

414.2 KB Created: 2022-03-02 01:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: e622a25da0cbb905077fc317cd81421a SHA-1: eef3cb89dd7b0e1e0cc503b3a03bf5b014fc8422 SHA-256: 8756cb2e6fe67658456271904217e0d659f678722eb55646dcf281ce0b2bc4b0
161 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4424

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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 http://ashop.26srv.de/entwicklungsumgebung/ashop/user_ashop/cms_images/files/muxake.pdf In PDF document text
    • https://mcq-exambd.bdbabymart.com/app/webroot/ckfinder/userfiles/files/28760875520.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/11u64fe9u7kn495oo16g4k6v96/90865962581.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/rekixukeximamiliwasipi.pdfIn PDF document text
    • https://cebubigsellers.com/userfiles/file/58327025839.pdfIn PDF document text
    • http://dc-0b9b12d700ad.collinite.pl/userfiles/file/jisigopasowijazogojibe.pdfIn PDF document text
    • https://fda.weblineinfosoft.com/UserFiles/files/kirazemimemenuxi.pdfIn PDF document text
    • http://hvezda-pardubice.cz/files/file/zadonitujow.pdfIn PDF document text
    • http://casim.se/kcfinder/upload/files/22208647992.pdfIn PDF document text
    • http://inlocoodontologia.com.br/assets/kcfinder/upload/files/masazabefiriravubujome.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/5b30c531d8242f070e710a08d9581745/venopuzuwubuviw.pdfIn PDF document text
    • http://15881588.com/ckupload/files/40745307351.pdfIn PDF document text
    • https://heritran.vn/uploads/news_file/3184558559.pdfIn PDF document text
    • https://gdaniec.com/upload/files/kowukifoguvokuzumibu.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/44213396185.pdfIn PDF document text
    • http://chandravanshi.com/userfiles/file/55106848486.pdfIn PDF document text
    • https://p-yanagase.gorakuou.net/blog/upimg/zonogokulagijubijepekabet.pdfIn PDF document text
    • https://kecweleri.kendalkab.go.id/kcfinder/upload/files/57764027491.pdfIn PDF document text
    • https://nisahanpin.com/calisma2/files/uploads/45203699431.pdfIn PDF document text
    • https://abcdev.opusviewdev.com/app/webroot/js/image/files/93426252123.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/96979663901.pdfIn PDF document text
    • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/vapujewukezemokugobepu.pdfIn PDF document text
    • http://sipzip.com/userfiles/file/bofijagobam.pdfIn PDF document text
    • https://sca-eagleegg5k.com/ckfinder/triplebuserfiles/file/2548337880.pdfIn PDF document text
    • https://longislandinvestmentadvisors.com/nini/userfiles/file/98411554997.pdfIn PDF document text
    • http://fabrikando.com/cmsimple/images/file/46463925306.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16202f7fd7933c---faruzopizipe.pdfIn PDF document text
    • http://www.bioengenharia.com.br/public/libs/kcfinder/upload/files/93446715548.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/wodemuledamuxarubobumu.pdfIn PDF document text
    • http://bikesport-krnov.cz/www/js/kcfinder/upload/files/punegag.pdfIn PDF document text
    • http://byty-pardubice.eu/UserFiles/File/lilixixa.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=amazing+grace+flute+sheet+music+for+beginnersPDF link annotation
    • 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_off000608d6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000608d6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000608d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608D6 11064 bytes
SHA-256: 69b8161be8c2a52b67cfd1f079c57ac4524c0b4e6371c6ff964b0c3b1daf495e
font_01_sfnt_off0006227b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6227B 18384 bytes
SHA-256: 8a671c6dd4b963a2c9020e7c13522eb81f214a6262ace162e3e27a43f2e0a339
font_02_sfnt_off000651c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651C8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9