Malicious PDF — malware analysis report

Static analysis result for SHA-256 7938ac3a2647740e…

MALICIOUS

PDF

80.0 KB Created: 2021-09-01 08:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 2c883612c4ddfc6b6d4808828cea606e SHA-1: e4ca27a4f3568b50afecab4a05d50ccc81fcc021 SHA-256: 7938ac3a2647740eed471c294f43b48af8a1c7b71a1edd71eb19e84cada907e3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://exosportsante.fr/ckfinder/userfiles/files/90646115468.pdf In PDF document text
    • https://thaiwoodengames.com/files/upload/files/posamoj.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ac1e24680---fijatoxa.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/dpr7an8vr1h1sbqacr52ldtg0q/zerinaxejopu.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/duduxawa.pdfIn PDF document text
    • https://elmawadah.com/userfiles/file/12764880058.pdfIn PDF document text
    • http://king-pro.com/userfiles/files/12057745012.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160891a845c21d---85826414784.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/2125fefc7a4b6e67baa469f311a11a1d/danisedefumiwusedituboje.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/vumafosadenukav.pdfIn PDF document text
    • http://wallacewilliamsfamilyreunion.net/clients/6/66/662ca4338cd1fa41fa93b88222973dc6/File/59390996865.pdfIn PDF document text
    • http://lukoilmarine.com/ckfinder/userfiles/files/kijelulafozabidogudo.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079ea809d628---juwoxogepaxumo.pdfIn PDF document text
    • http://innotack.com/userfiles/files/57262740761.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/tekrqmceh1gih9vltuar268dl1/mofetetubirof.pdfIn PDF document text
    • https://theshamrockpublecco.it/file/legurawi.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160853a1e2e57f---25744613901.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=equity+valuation+pdfPDF 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_off0000d562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD562 17420 bytes
SHA-256: 5475a00d1ef9579a588c938469e27ebd78e5302fdc632c1e9a3446b309e62eb6
font_01_sfnt_off000102a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC0 10500 bytes
SHA-256: 339319bd5cece92d7436c56df81f494d81ec00706d8e816980a713b2942d217a

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