Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad21a25af3f9a8b…

MALICIOUS

PDF

82.8 KB Created: 2022-03-31 15:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-20
MD5: 6cbbdd113d84b0ed3110ec5afdeaf097 SHA-1: 259bbc0c2fdf6fa0720c839818f55cd29e20e402 SHA-256: 9ad21a25af3f9a8bacef5afc8885bd11d730d65d50ad050f746877d0190eba6d
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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
  • 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.
  • 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://yoyep.co.za/YmrXLWy8?keyword=what%20are%20qualitative%20and%20quantitative%20evaluation%20methods PDF link annotation
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/wijotodotoma.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/33bfcb3e87643023b9fc8626618684f2/gubasomivape.pdfIn PDF document text
    • https://bapuporodotuxo.weebly.com/uploads/1/3/1/3/131381531/gujamawi.pdfIn PDF document text
    • https://lazidejapagopi.weebly.com/uploads/1/3/4/8/134891766/kawewinugujuvikut.pdfIn PDF document text
    • http://xmzhj.com/UserFiles/file/pijegawituwudilogego.pdfIn PDF document text
    • http://dokumsuzgec.com/userfiles/files/74419187146.pdfIn PDF document text
    • http://olddieselparts.com/ckfinder/userfiles/files/dixof.pdfIn PDF document text
    • http://kartonpier.com/admin/kcfinder/upload/files/29849192836.pdfIn PDF document text
    • https://rakazukubuzabi.weebly.com/uploads/1/3/4/7/134736781/mowavazato.pdfIn PDF document text
    • http://www.volteram.com/kcfinder/upload/files/16892073969.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16213512d22d4b---9977384139.pdfIn PDF document text
    • https://faustgottes.ch/upload/files/pomediguw.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ad606ba697---xujovixidefe.pdfIn PDF document text
    • https://napowokomedisuf.weebly.com/uploads/1/3/4/3/134379523/8814083.pdfIn PDF document text
    • http://aedelsur.com/contenido/files/95356577534.pdfIn PDF document text
    • https://xopekasas.weebly.com/uploads/1/3/4/7/134748476/zelajixuxol_virexuwiw_kuputofivebes_tenidubiva.pdfIn PDF document text
    • https://sedaduvu.weebly.com/uploads/1/3/4/5/134598683/vaxusuwuteji-lewanufotelof-vijugewaguk-noferifonap.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/wabidetof.pdfIn PDF document text
    • http://groupeao.com/app/webroot/js/kcfinder/upload/files/vuvuxedejisujuwudivup.pdfIn PDF document text
    • http://luatsubienhoa.com/upload/ck/files/4014573235.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1623eb03dcb5d0---dujafafefijazidugepimad.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622f2cfb7c00b---weniwumorozifibujijelodiz.pdfIn PDF document text
    • http://briztravel.com/upload/files/25530163433.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/45507365382.pdfIn PDF document text
    • https://bozofapenori.weebly.com/uploads/1/3/5/9/135965419/1877398.pdfIn PDF document text
    • https://sovirufumidek.weebly.com/uploads/1/3/4/9/134902413/2482435.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16229b1c42a7a1---zefavawozexowax.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 extracted file (font_00_sfnt_off0000dfb0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dfb0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C2 16684 bytes
SHA-256: d3185c8b9b462b3ea5d869abedbdb9bbc94aaad9e900cab986eb8c139c16b250
font_02_sfnt_off00012315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12315 10820 bytes
SHA-256: 68cf2f223a862f8de7293c845a4c35d3e28b9c84e4a0e39d4b705ad737b77632