Malicious PDF — malware analysis report

Static analysis result for SHA-256 1917933cf27de7c3…

MALICIOUS

PDF

98.0 KB Created: 2021-07-30 17:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: fa5a0892978a0c93951f107d50dd4d57 SHA-1: 40c3d30691f56a86cd5825fe65f59a12568a8d76 SHA-256: 1917933cf27de7c34fd66acb676a7df8e55fbabf4bc943f1d8486bb30954584b
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://hoacanh.net/luutru/files/84101301831.pdf In PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/cumorsk0cs4rm6l7tqmk9moluc/xoxor.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/939c24489d647eb621932a71d832265c/9041819847.pdfIn PDF document text
    • http://altinay-law.com/images/file/bekapovenidamapezeb.pdfIn PDF document text
    • http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/sevijowogufofo.pdfIn PDF document text
    • https://506hlapeta.com/files/file/bobik.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/k6arpk7lebbphbv9itslecnbf5/sozofumaxolevawemig.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-3/20210503175922565042.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/isrqh422n7lrnrbniofjd3a07d/darodinixotowemug.pdfIn PDF document text
    • http://sevinctekstil.com/resimler/files/75795180436.pdfIn PDF document text
    • http://tweddlefoto.com/files_contenidos/upload/files/11924189686.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/50548990916.pdfIn PDF document text
    • http://ituor.ir/basefile/chartermeinfo/files/xupezupofipojepud.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b0a2bbf39---navumajimi.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/1ec8fe96d43034cf19da8a481573a430/32866744336.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/57420346842.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079ddf8573c7---fafewetipupuronibegi.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095d80e591ca---5661504078.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/670911de05fbce849f63066dc3a96f43/49213397648.pdfIn PDF document text
    • http://gostinica-domodedovo.ru/files/9729979531.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/98989477908.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/setatarisu.pdfIn PDF document text
    • http://etcad.net/np/upfile/file/vejosubelimipimesorojav.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0068b0be1---zizezeravogi.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/sijamumizeziduninusegelid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=ensayo+sobre+la+historia+del+dise%C3%B1o+graficoPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118FF 11200 bytes
SHA-256: ab4c22af9679cc50dc746e323422ffeb341c66b96059005d1f6a286d3f1e3391
font_01_sfnt_off000132b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC6 17864 bytes
SHA-256: 0de0130d764817b7d673e9e8b821a7d3d2ff0db9d16a23602020ac3c17960b50