Malicious PDF — malware analysis report

Static analysis result for SHA-256 7821e24d491f7127…

MALICIOUS

PDF

84.2 KB Created: 2021-10-06 09:34:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 3b4f90022a57373c4a217ca0b7b3a480 SHA-1: 3e5855e3852499e426f24cacbd353c987b77a4e2 SHA-256: 7821e24d491f7127d0bc178de69de301783731e0325f3031871482fe884ea0b8
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crewmak.ru/uplcv?utm_term=maybe+hack+apk PDF link annotation
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f0d8b7d396---rovilovadogadenitape.pdfIn PDF document text
    • https://promoxcenter.ro/ckfinder/userfiles/files/3341358916.pdfIn PDF document text
    • http://mkpstroitel.ru/upload/files/wexuvujorotuzak.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/53426107606.pdfIn PDF document text
    • https://pacientes.quiroser.com/UserFilesQUI/file/33953224067.pdfIn PDF document text
    • https://piauiaqui.com/ckfinder/files/gamavur.pdfIn PDF document text
    • http://xn----8sbfhu6ab4bqv.xn--p1ai/userfiles/file/jawopedoluxexa.pdfIn PDF document text
    • https://zagi.hr/files/makudajapurujakoliro.pdfIn PDF document text
    • http://shahnawazonline.com/uploads/files/dadimajuj.pdfIn PDF document text
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/xonikotopekog.pdfIn PDF document text
    • http://elma1.ru/!upload/files/56146340212.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/gogafe.pdfIn PDF document text
    • http://becucci.it/userfiles/files/wufelagijupij.pdfIn PDF document text
    • http://poddertradingandindustries.com/userfiles/file/junatiraxoberigakovewese.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/5382407637.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/36282557008.pdfIn PDF document text
    • http://greentreeprep.com/cote_dor_import/admin/ckfinder/userfiles/files/momotapesimifeganitexasiw.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/49385245853.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/17247272420.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161557224d0d18---zesasunuvenom.pdfIn PDF document text
    • http://studiotecnicolari.it/userfiles/files/xodijepamu.pdfIn PDF document text
    • http://louisamerino.com/userfiles/file/92060066351.pdfIn PDF document text
    • https://mwasafat.com/uploads/files/nojuxetomolukujulo.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/91685433853.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_off0000e329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE329 10080 bytes
SHA-256: 327c8227609d18ecf710953b4894441d886411a33d8c9bc7ec7478359b18a222
font_01_sfnt_off0000f98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000111a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A1 19304 bytes
SHA-256: 01411d9ee0b3ed94fe235d42bddf0549d73d15f6876f5c4d54728a392e5f784c

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