Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1d3a4124fd387d…

MALICIOUS

PDF

87.0 KB Created: 2021-10-10 21:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-31
MD5: f1dae7986eb867bf6a4da46483ab9bd4 SHA-1: d094a4a00e533a7205667c4bf6b31eb41c437cfb SHA-256: 5a1d3a4124fd387da473c97f8d079f1f272b32c542f8939f65bd8390f6a753b9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://smidgel.ru/uplcv?utm_term=the+home+place+bed+and+biscuit PDF link annotation
    • http://dentherapia.hu/files/file/80757607480.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/wowurebaxula.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16146e526a96f5---16479398973.pdfIn PDF document text
    • https://zohopinler.com/calisma2/files/uploads/kirilidizakukeveloxonob.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/11170279426.pdfIn PDF document text
    • http://kaie.org/userfiles/file/20211004094511.pdfIn PDF document text
    • https://movimientofamiliadejesus.com/images/uploaded/file/jaxeperelogap.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16132a29ba5f62---19339391245.pdfIn PDF document text
    • https://hinaweb.com/upload/file/17771047372.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/suzepewemegatoponoxa.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/safam.pdfIn PDF document text
    • http://frankifoto.com/uploads/pages/files/zopibefed.pdfIn PDF document text
    • http://medicalproduct.hu/images/files/zijakivutabokakiwe.pdfIn PDF document text
    • https://rtquery.reitoken.org/Coaching123/images/files/pudat.pdfIn PDF document text
    • http://extrastyle.ee/ckfinder/userfiles/files/dosizowuvab.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/egjeoe9kbeokoda5tc2p9nvrg9/72431517446.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/degaporozixemevabuladub.pdfIn PDF document text
    • http://decoworld.in/dayafter/uploadimages/newsimages/file/rubidagazovafemawodaru.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16160d97b25e43---55403723420.pdfIn PDF document text
    • http://highspiritsmusic.com/ckfinder/userfiles/files/62545033036.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16140edb9bc38d---loxuguwisajodelutemesak.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/memuwenedurovotepat.pdfIn PDF document text
    • http://chiaranannini.com/userfiles/files/nebizalakomenagavir.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9817c44d8---ritolorasixiwuxanaji.pdfIn PDF document text
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lorad.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_off0000ea7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7C 18968 bytes
SHA-256: e00ba20cf186cca8c9a0d4b9524aa741691c126fdecaa630088ad8acefdab7de
font_01_sfnt_off00011c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3A 10884 bytes
SHA-256: 1001a09d4c2ec684a42f841280cd6877ef2ea72d961edc94880124b4f8aa52c1
font_02_sfnt_off000134f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1