Malicious PDF — malware analysis report

Static analysis result for SHA-256 191a2c4ac35d1143…

MALICIOUS

PDF

93.1 KB Created: 2021-10-19 03:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: f8fabf6f8ebb2f26dc3d1684ece8d58b SHA-1: f81d083202bcbc78793ffcdd29622b2634ee30d0 SHA-256: 191a2c4ac35d11437b3bcd47f7396f3af946f142b2bf724addc4344648af55b8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://tylincms.com/userfiles/files/16475087150.pdf In PDF document text
    • https://areicon.com/images/file/wefizofagelawalitaki.pdfIn PDF document text
    • https://snapstudios.ca/userfiles/file/22059778924.pdfIn PDF document text
    • http://onmamtour.com/FileData/ckfinder/files/20210911_922030744D5253E7.pdfIn PDF document text
    • https://helicopterleasingservices.com/userfiles/files/morarakipin.pdfIn PDF document text
    • http://furniture83.com/upload/files/73106327603.pdfIn PDF document text
    • http://centrons.com/uploaded/file/12978557586147d4955f64e.pdfIn PDF document text
    • http://christopherspubandgrille.com/userfiles/files/migoriremeluruposizar.pdfIn PDF document text
    • https://qigoodteam.com/uploads/files/202109162100059958.pdfIn PDF document text
    • http://dtmaso.com/public_html/Imagens/file/dorefa.pdfIn PDF document text
    • https://used-machinetools.ro/app/webroot/files/userfiles/files/14544472057.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/nolagaxubugedurezu.pdfIn PDF document text
    • http://flemingdecal.com/uploads/assets/file/nuderamopedetidedu.pdfIn PDF document text
    • https://xn--nmqu14inmf.com/upload/files/64895517166.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/2e1b2c0b39a975719a355ae1fb75e16b/vixekofuwowebu.pdfIn PDF document text
    • http://yuhuimachinery.com/d/files/pevijexurira.pdfIn PDF document text
    • http://ngoinvest.com/uploads/ckfinder/files/rumitun.pdfIn PDF document text
    • https://by-express.com/upfiles/editor/files/46967656744.pdfIn PDF document text
    • https://nasco-ye.com/uploads/file/tevinitebozibuxijud.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161322504ca259---17106501621.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/rosadoposimese.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1615f4c59ec9b1---nekefisojifopobozedegom.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615db9b4a2dda---9864507977.pdfIn PDF document text
    • http://wajl.net/img/file/2021916183737.pdfIn PDF document text
    • http://hueide.com/upload/files/jewavape.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/5bhJmFgkeCE/uplcv?utm_term=wrong+turn+8+full+movie+download+in+hindi+dubbed+300mbPDF 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_off0000fa9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000112ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AE 22452 bytes
SHA-256: cf5332caa03f6221617a31e94713fc5cbebead342503d9503d9e3afc61f12b68
font_02_sfnt_off00014b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B3A 11520 bytes
SHA-256: 8b1702af1da3cc013ca98a73b9ac6312b1051b9e8350f67790bf84872efd9866