Malicious PDF — malware analysis report

Static analysis result for SHA-256 1919353e6c56be3b…

MALICIOUS

PDF

83.4 KB Created: 2021-10-04 14:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: dc926feb0f0e2bdacd187189fc321867 SHA-1: 911fec42270cedecfde27ffef5aed008a276b314 SHA-256: 1919353e6c56be3be892851f3cc0e73ed1b0efc4de6308046f62ac00b08dc10c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://krisoc.ru/uplcv?utm_term=certificate+of+medical+fitness+form PDF link annotation
    • http://www.oe.com.tw/ezadmin/ckfinder/userfiles/files/74236961881.pdfIn PDF document text
    • http://houstontca.org/Content/uploads/files/kibag.pdfIn PDF document text
    • https://billard-hauri.ch/userfiles/file/dopudijobalereruf.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/53214477504.pdfIn PDF document text
    • http://hla.vn/upload/files/katavovatipe.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/xumibe.pdfIn PDF document text
    • http://studiofelician.com/userfiles/files/25763536554.pdfIn PDF document text
    • http://tecmifor.cl/userfiles/file/23169011476.pdfIn PDF document text
    • http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bofudazepavaxegerufiji.pdfIn PDF document text
    • http://levant-tekstil.com/other_files/File/wodikorezapabefogimaweje.pdfIn PDF document text
    • http://www.parkwaytransplant.com/media_upload/upload/files/29570617525.pdfIn PDF document text
    • http://www.lbtfilm.com/uploads/files/xikufuwenexofawij.pdfIn PDF document text
    • http://artpolyclinic.com/file/files/42738983308.pdfIn PDF document text
    • http://anindecor.pl/files/file/zuzudewozemikola.pdfIn PDF document text
    • http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/3860f7f67a2e04dd824efb2d0071c4fa/laponezapadi.pdfIn PDF document text
    • https://ctcitsupport.com/media/files/tawuramefojaboso.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614139d14c63e---59984472596.pdfIn PDF document text
    • https://lazeo.nl/userfiles/file/tegikiduxemuw.pdfIn PDF document text
    • http://superazs.ru/images/news/file/jovuvivavilimimiz.pdfIn PDF document text
    • http://squarcialupirelaxinchianti.com/writable/public/userfiles/file/nelelilunozavajomexizeb.pdfIn PDF document text
    • http://kme-kme.cz/files/file/votifekusupadaxikema.pdfIn PDF document text
    • http://cuanhuadanang.vn/uploads/image/files/gonosadodej.pdfIn PDF document text
    • http://proximeo.com/ckfinder/userfiles/files/taxidakonukijamizeruna.pdfIn PDF document text
    • http://sbcnepal.com/images/file/2573774482.pdfIn PDF document text
    • http://praconsulgroup.ru/pict/file/vurotuwogaxunetuxojufiwop.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 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_off0000dd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD80 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF597 10668 bytes
SHA-256: 25fa799e0a645540be290899d187ce1d64f4ab1dff49ff0f01e56a66af51e760
font_02_sfnt_off00010e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0C 19060 bytes
SHA-256: f620d8f4a40a38d65ba87f92cf50f371ff1e26b5003b0b2f755871610f3ae5ee

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