Malicious PDF — malware analysis report

Static analysis result for SHA-256 793756ba3a547023…

MALICIOUS

PDF

73.3 KB Created: 2021-10-01 09:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: fc7ae65fbd9881172d9eca0b7b6ca83e SHA-1: e78322214eb4b666440f1046a7e7740aabb648a0 SHA-256: 793756ba3a54702323067483f51b02be1f62e052c7177d4d09ff8e69118f9e85
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://krisoc.ru/uplcv?utm_term=vanbasco+midi+player+for+android+free+download PDF link annotation
    • https://isabellepieman.com/userfiles/file/zadozalufar.pdfIn PDF document text
    • https://marugame.hk/editor_upload/file/miwejerobuligimonuxabot.pdfIn PDF document text
    • https://dacola.com/upload/files/33046397526.pdfIn PDF document text
    • http://chikatere.com/Upload/files/zidoladeni.pdfIn PDF document text
    • https://atputasbazes.lv/images/userfiles/files/zijewegipovepav.pdfIn PDF document text
    • http://holland-ex.com/images/blog/file/4576839548.pdfIn PDF document text
    • http://stphilomenaonline.org/userfiles/file/94543717905.pdfIn PDF document text
    • https://mancomunidadvaldizarbe.com/userfiles/files/26806617778.pdfIn PDF document text
    • http://facyt.com.ar/ckfinder/userfiles/files/gevutubuwezonukuwizi.pdfIn PDF document text
    • http://zangerlelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xozux.pdfIn PDF document text
    • http://groupelamiri.com/uploads/FCK_files/file/moluzisolesor.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/gatavuxel.pdfIn PDF document text
    • http://belniig.by/public/file/kodigatoduvejume.pdfIn PDF document text
    • http://jurabos.nl/include/editor/file/70769679402.pdfIn PDF document text
    • http://hsaltsj.com/uploads/files/51923196020.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/77167742875.pdfIn PDF document text
    • https://slicktechproducts.com/newerac2c/userfiles/file/54288328548.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16155e3c8c76c3---49987154099.pdfIn PDF document text
    • http://101balkon.ru/upload/files/xazuvaravawogujositobi.pdfIn PDF document text
    • http://vinaaquachem.com/uploads/files/famokuni.pdfIn PDF document text
    • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/64851084044.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/ab2socq09dfnhjlma07ngc1317/88093252972.pdfIn PDF document text
    • http://cw-cut.com/uploads/file/30962740239.pdfIn PDF document text
    • http://dinhvi5s.com/images/newtech/files/9212715319.pdfIn PDF document text
    • https://mb-classic-service.de/userfiles/file/39016276230.pdfIn PDF document text
    • http://humanlitech.com/files/files/ranero.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/9cb85c852d672e7f5b13f4ae616f749b/53658116123.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_off0000b6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C9 17812 bytes
SHA-256: 0aabc155199fa0a3b48a7ec52dba04b27878fad0c2c8c1db1884ec65592980d1
font_01_sfnt_off0000e36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36F 10992 bytes
SHA-256: e6f17917f690ae1d93c36b06a32a5ad887e619e1220ae4ecf9dc140e9656343d
font_02_sfnt_off0000fcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1