Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7ec9a0e481eaaf…

MALICIOUS

PDF

114.1 KB Created: 2021-08-18 11:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 744ea5c90bfadd9e86c278e0519481ce SHA-1: 7a34bd25abed04f356e68523e0f19a95239c2f5f SHA-256: cd7ec9a0e481eaaf52cd3581af66f4b831fe44ea424c130e71203a79331df33f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://hchs1972.com/clients/2/2c/2cb73362227bcfbd3ed6ae01b5b3dc46/File/42858692694.pdf In PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16082027ddfd4f---69878373314.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab6458bdc6---dutatug.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/ho1koojs0j2mge9rh5tai8m624/duwimipememixajowufu.pdfIn PDF document text
    • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/zamonojig.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/252c67ad17c1971be99fa300d0e94c88/zejusirelaren.pdfIn PDF document text
    • https://247hvac.ca/fabulous1/uploads/files/javef.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609070f65696c---vedejunuwasemenakupu.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/1491f7cca1c62d73334f92f0fb977900/98609670899.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/59745ebd89e708d641eabac59e9f0483/28577965515.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/4628751ada945a60bdb3cc5b34697968/faroreluzisokil.pdfIn PDF document text
    • https://mannoorpally.com/uploads/file/jigik.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/files/files/76680369125.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/texuferow.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/wuvowijetativu.pdfIn PDF document text
    • http://espicycooking.com/files/file///nojesufir.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/13681585641.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/lilekagopizapu.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1611c6605690d2---71588084083.pdfIn PDF document text
    • http://bacviettech.vn/userfiles/file/40543442424.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1c2eef0be---53883598355.pdfIn PDF document text
    • https://kasihpaham.com/contents/files/kumafiduxapokud.pdfIn PDF document text
    • http://business-plan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/livuguperi.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/6ots4a5hoqiso35b33nmj2oldo/mufaxerezawonazozerapabe.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/40fbc1b1d717ccd3b99898c78391441b/16894720344.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/51235578388.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=actitud+positiva+cesar+lozano+pdf+gratisPDF 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_off00015355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15355 11004 bytes
SHA-256: c1646c67bdcdcf887ce6256a031f80c745b15701512192c85153abedaa1dd5bc
font_01_sfnt_off00016cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CEE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18500 20888 bytes
SHA-256: 096bc9929737764267c813fb2bb6ae6f271901b05eeaf8bb503fee818805b80f

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