Malicious PDF — malware analysis report

Static analysis result for SHA-256 875d5d84db7a9f31…

MALICIOUS

PDF

404.5 KB Created: 2022-02-25 20:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: 17dd17f01d120b465d89f6411276c8d7 SHA-1: b7c0998426452bd0cc19805510ef828baa58415c SHA-256: 875d5d84db7a9f31b621b54cca4f7a0772df203a78ae167f59ed2f87d67e0e40
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5053

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 http://www.cpnatacao.pt/backoffice/ckfinder/userfiles/files/39346033264.pdf In PDF document text
    • https://giant-nano.com/app/webroot/userfiles/files/mavifizipare.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/39645688534.pdfIn PDF document text
    • http://studiopetrilli.it/userfiles/files/3487978864.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1621802c54bf16---kizefumumawelozasid.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/162084007d65bd---94026724070.pdfIn PDF document text
    • https://www.medicalbi.com/ckfinder/userfiles/files/91247151529.pdfIn PDF document text
    • http://testwebb.net/kcfinder/upload/files/zizezuzidudi.pdfIn PDF document text
    • http://ugyved-szaknevsor.hu/media/files/ramomifuririjabizugose.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/rosituvi.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1635382679.pdfIn PDF document text
    • https://we-plus.tw/ckfinder/userfiles/files/doperebilutogel.pdfIn PDF document text
    • https://managedentalclinic.com/ckfinder/userfiles/files/fusenakovezumakoko.pdfIn PDF document text
    • http://xn--80aaa6aachkjln0qra.xn--p1ai/ckfinder/userfiles/files/roliravuzapa.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/d80b10e0c7e612faf68e2d8564ba5b72/xelebevafe.pdfIn PDF document text
    • http://mariamozharova.ru/uploads/files/58636683014.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/mofavorebavefogorotim.pdfIn PDF document text
    • http://primethailand.com/ckfinder/userfiles/files/72492194214.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/28389915814.pdfIn PDF document text
    • http://athaj2.specialty-match.com/upload/files/20532058285.pdfIn PDF document text
    • https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/fadanabefoz.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/wejelanenipopuxini.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/meluwirelapira.pdfIn PDF document text
    • http://applecentervn.com/uploads/image/files/ravujepapodixorakij.pdfIn PDF document text
    • http://bf4.nim.ru/userfiles/files/36931247430.pdfIn PDF document text
    • http://weddingdove.tw/uploads/files/202202041058582908.pdfIn PDF document text
    • http://favourtec.com/attachment/file/51203972195.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/70407903754.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/bukofunuxojizutofap.pdfIn PDF document text
    • https://madhubanindiancuisine.com/nbloom/fckuploads/file/josekage.pdfIn PDF document text
    • http://www.azurwelcomeservices.com/userfiles/file/bopasubevilobuwupimokos.pdfIn PDF document text
    • https://viboot.com/ckfinder/userfiles/files/wejexuxameruduwa.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/d8c758363cbbb76023f0adfc74f6002f/tafexujiwe.pdfIn PDF document text
    • http://concienciafiscal.com/kcfinder/upload/files/bopanopakefanagixanatose.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/57305751888.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/62974610152.pdfIn PDF document text
    • https://cuatudongbinhduong.net/uploads/files/17752539065.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e82e5552a8d---43778446012.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/61294665381.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1619162e3d5c1e---62345296151.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/sixogajutikib.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=adiabatic+flame+temperature+solved+problems+pdfPDF 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_off0005dcb2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005dcb2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005dcb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCB2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005f3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3CD 19172 bytes
SHA-256: ffd016e546fdace5ddc9657597051466531cafe73e74d644f8207ffd01ec9def
font_02_sfnt_off0006266f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6266F 10964 bytes
SHA-256: d9f1a592c54fb98d9c2540f280de7573a0c1cf22062268941d24a788fabd829a