Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bf2c33c515fd31…

MALICIOUS

PDF

250.1 KB Created: 2022-03-15 22:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 96b4355b89b1bbb1beb1c806e46ef92e SHA-1: b7e71bd904f6c47e40d863783ad90b9109fc9400 SHA-256: a8bf2c33c515fd311146187679fb583de605f2be4ee66b45034bcb2eb0534d1e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7707

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 https://pierrelemagicien.com/userfiles/file/temimabeli.pdf In PDF document text
    • https://walkandsmile.com/userfiles/file/fepefojimasedimesipajig.pdfIn PDF document text
    • http://netpost.vn/upload/userfiles/files/26028417052.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/losotamofavaxizug.pdfIn PDF document text
    • https://wwa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/kimaresizotuvunu.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/kuzipovidak.pdfIn PDF document text
    • https://isped.cz/kcfinder/upload/files/zovurulusak.pdfIn PDF document text
    • https://littleitalypizzany.com/nbloom/fckuploads/file/16202655932.pdfIn PDF document text
    • http://bc-nosingtasting.com/bestanden/files/gatejugoboxokejuju.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/pivavu.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/ra60mkb1v3gk6u8ld5tb1bvem4/debefalijiruxekux.pdfIn PDF document text
    • http://kientrucmoi.com.vn/admin/kcfinder/upload/files/medizebatefisexalufixodok.pdfIn PDF document text
    • http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/81708087025.pdfIn PDF document text
    • http://tao-ssct.org/data/upload/file/wodawekidalezawomuli.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe6a6fd52b5---45154005138.pdfIn PDF document text
    • https://drlanda.hu/user/file/ximazidodigagifasoguwuku.pdfIn PDF document text
    • http://iwebcambodia.com/admin/kcfinder/upload/files/38355040691.pdfIn PDF document text
    • http://gyermekhaz.hu/Content/site_images/files/xuwijudepipoxiw.pdfIn PDF document text
    • https://www.studiorosaliabusco.it/ckfinder/userfiles/files/wevurobabugapigujuvowe.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2022020115251273499.pdfIn PDF document text
    • https://valserve.in/web/k/main_admin/ckfinder/userfiles/files/tejusatevuxokaxosaxikad.pdfIn PDF document text
    • https://coherence.cz/userfiles/file/2193553802.pdfIn PDF document text
    • https://centrehistoriquesndbc.com/ckfinder/userfiles/files/41173822752.pdfIn PDF document text
    • http://www.studioamorosi.com/notizie/allegati/mazof.pdfIn PDF document text
    • http://rhondachem.com/d/files/pamuwivuvefafewolenez.pdfIn PDF document text
    • http://webcertain.asia/contentupload/fckeditorUploads/organization_/file/38759934118.pdfIn PDF document text
    • https://rugsdirect4u.com/uploadedfiles/file/52038943931.pdfIn PDF document text
    • https://www.ajmetaldesign.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/64486097741.pdfIn PDF document text
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/11113352495.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1620a48f2b281b---42744881415.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=biconical+antenna+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_off00037a3a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00037a3a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A3A 18708 bytes
SHA-256: bc8644d9275db610a4e8e63a9f98a1c7ad40cfbfe6bd8f73088ad4c6d853245a
font_01_sfnt_off0003aac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AAC7 10400 bytes
SHA-256: 7c6aa42d77238addd8f8791c082c1a3a0cd7746748b356711ed787bad3331f05
font_02_sfnt_off0003c26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C26E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9