Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ba9b81e149aea1…

MALICIOUS

PDF

76.6 KB Created: 2021-08-19 16:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 1f20fd8d07cd790c4a539693cef29bfa SHA-1: 69b738bedb1f455c873acb6f8c1895b99152bdeb SHA-256: 72ba9b81e149aea13ac9994f854dde451b00eaf1175effa39d4acb3bc4b1490a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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://infrive.ru/uplcv?utm_term=agent+sai+srinivasa+athreya+hindi+dubbed+full+movie+watch+online PDF link annotation
    • http://bumsnab.ru/uploads/files/filidaterebujazewi.pdfIn PDF document text
    • https://feldmann-spedition.de/pics/userfiles/file/susizekotutunimabogidojir.pdfIn PDF document text
    • https://thuanxuongmonmb.com/admin/webroot/upload/image/files/rusobigadukega.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b55d2735df9---medugeridumikabulug.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/46777818092.pdfIn PDF document text
    • https://mzlpro.com/web/img/podborky/files/pogasilupimebom.pdfIn PDF document text
    • http://innovatepc.com/userfiles/file/23261169624.pdfIn PDF document text
    • http://augustaelectricalwork.com/editorData/file/42236607322.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c5409e4915f---ropujivar.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/93117606260ed9e0e97944.pdfIn PDF document text
    • http://tentauto23.ru/ckfinder/userfiles/files/dobilobewotatunaka.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/namibejab.pdfIn PDF document text
    • http://www.enfersalus.com/ckfinder/userfiles/files/julop.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de5d9267a35---zusadiv.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a9f174709---60181433609.pdfIn PDF document text
    • https://www.gryf-wet.pl/ckfinder/userfiles/files/93150461554.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722cb9deb81---93190844049.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/9d2c816e99e6b2a56741012a7df8ba22/24145067121.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/bugebaputenu.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae4a7a9b1d0---87112681375.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/dosasixozafetowu.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/zaxawasub.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/51405761075.pdfIn PDF document text
    • https://superpart.com/files/lebisuwedudap.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_off0000c4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC2 16576 bytes
SHA-256: d9dc53234aaca08fea7aedbb7031db944fab90a6be7f4551dc8c21c605c3abfa
font_02_sfnt_off000107f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F9 11408 bytes
SHA-256: b1130d5662b968dd03258d64855121cc07fd2dedb17b3b03ecdb1d817227c28a