Malicious PDF — malware analysis report

Static analysis result for SHA-256 782b711e4cd8d39c…

MALICIOUS

PDF

72.9 KB Created: 2021-10-12 23:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: a66ab117c2365308cf5ef49657d836fa SHA-1: f58802f6e7010d74069df99c6476fb1c36de3b66 SHA-256: 782b711e4cd8d39c208d3ebc7fc2c9a4942501280445254c74a45c78c00a8691
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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 http://ikhmongol.mn/ckfinder/userfiles/files/jopibuten.pdf In PDF document text
    • https://h1t-url12shio-turbo.com/contents/files/36469622589.pdfIn PDF document text
    • http://kant21.com/userData/board/file/13756607474.pdfIn PDF document text
    • https://rowsontw.com/shopadmin/upload/files/kosetotiko.pdfIn PDF document text
    • https://mallarpurnaisuva.org/go/file/kufezegofubesuwatevobabaw.pdfIn PDF document text
    • https://nisahanpin.com/calisma2/files/uploads/jelodama.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a88d97acfd---76994269561.pdfIn PDF document text
    • http://okcashbagusa.com/uploads/files/62800838478.pdfIn PDF document text
    • https://kaskad-74.ru/images/uploads/bujegelupozomid.pdfIn PDF document text
    • https://ego-sofa.tw/uploads/files/202108311935452464.pdfIn PDF document text
    • http://thegioichuyendong.info/app/webroot/upload/files/51614783650.pdfIn PDF document text
    • https://www.nbc.com.vn/ckfinder/userfiles/files/dakasiputifugekafuge.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/98205973057.pdfIn PDF document text
    • http://0575zl.com/userfiles/file/fives.pdfIn PDF document text
    • http://kidsjeodo.com/images/files/wesakig.pdfIn PDF document text
    • http://studiorumeo.it/userfiles/files/3825975533.pdfIn PDF document text
    • http://qualityfirstservices.pro/testingsites/advantage_aviation/assets/media/file/pixutef.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1615444efdb81e---muxiledujozavipawox.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/37121073669.pdfIn PDF document text
    • https://fokusmedia.com/images/uploads/42429437767.pdfIn PDF document text
    • http://exito-opakowania.pl/userfiles/file/miwok.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143a9a4b1841---38823097950.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613728a05b243---54141243094.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/20219151617261991.pdfIn PDF document text
    • http://sangiorgioautoservizi.com/userfiles/files/95001455316.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/98516622589.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/TxADE9PCSUw/uplcv?utm_term=material+usage+variancePDF 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_off0000bb46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB46 10444 bytes
SHA-256: d11585d5c951e4b552f69a64722e1c34248618abf5dbd90a80f3e5edbd1b550e
font_01_sfnt_off0000d31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31B 16712 bytes
SHA-256: 92f545f4412a4e78b3abc7720f12c9e4d73e3ce2d79701e7efdec8df26fe1970
font_02_sfnt_off0000fe15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1