Malicious PDF — malware analysis report

Static analysis result for SHA-256 7827a050b83fca81…

MALICIOUS

PDF

85.3 KB Created: 2021-07-24 08:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 14b868b7f662b31db0492a265265426e SHA-1: 87090c41da50340a160bbe565deb08ff1364c008 SHA-256: 7827a050b83fca81bb054708aec93c63b44719fc822060fa8702b2f5dc51c163
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/q3oi01pq57hbgkoufnjm3astc0/bodabukesubusugulatova.pdf In PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a1b642cad---toxujefes.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916cb1eae29---jatoxumevupixotutadago.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/vironetur.pdfIn PDF document text
    • http://charivne.info/images/file/12986885780.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d312e068d---gobesisux.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/2vnh7b0ecagfb5nu23fvl2vej7/43751694512.pdfIn PDF document text
    • https://privatecambodiatour.com/userfiles/file/87377065499.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/15521939405.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/7977fef513f0b0aab2049d0a6bce2933/44625057506.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071037583bc7---18537676836.pdfIn PDF document text
    • http://abnicum.com/files/file/wugubisigitisageli.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/8b6b8aa8b06af96f546bbb59961facc7/xegikotizolavokerixixusel.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/966716e249c34c427bd5b335d0ca1598/sopamikaw.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/varatow.pdfIn PDF document text
    • https://biocoils.com/img/file/50885901125.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f34dd2db06b---9048774686.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/zuruguxate.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a1c0229fcd---dovagufofagodujepam.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/r7d5i2qre3c4e561ons8scnuqt/30291687149.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/ru3o4b0djl8ddlscugapqm6ngl/vikutiruxi.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160999aebde203---movoximiwizulolekofikis.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/vasalagelifidojixo.pdfIn PDF document text
    • https://hijaulumut.com/contents//files/33737781412.pdfIn PDF document text
    • http://tinhdaurosa.com/Images_upload/files/zewifatowegeru.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=saroja+movie+mp3+song+downloadPDF 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_off0000e9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 11164 bytes
SHA-256: d4a8d3b74b46c96a2f3af28086fb5ef68834626bf177eb63b7f59029ec87ad6b
font_01_sfnt_off000103a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB6 16664 bytes
SHA-256: 1abe21e42986dfe6d48e6f6b99530507d177701649ba14ea8d7ebc158e7ebcac