Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3478f5ca691575…

MALICIOUS

PDF

82.0 KB Created: 2021-08-22 04:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 24cba43ed46861ec8efe689d3416b460 SHA-1: 640c73145d795af0dfce5fe504eaf3fc0481d693 SHA-256: 4e3478f5ca69157541a4e89b7faa2a3907b3a72e26b8d40db72a4bce9a0866f1
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 https://philabc.ru/uplcv?utm_term=clash+of+clans+best+base+design+town+hall+level+7 PDF link annotation
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/f1ef2ced4c6ca44a0b57c2834ec766a4/pabesexemezadepovibujetow.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/30130922876.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611b0a81aed88---18317233463.pdfIn PDF document text
    • http://domplus.su/userfiles/files/24413709906.pdfIn PDF document text
    • http://grubstreet.ca/ckfinder/userfiles/files/mezawurigesibuzev.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a9439e955db---69498771584.pdfIn PDF document text
    • http://webbuilders.com/files/file/87077530110.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/36714296233.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/ae8c0df4b9d4a055e918716f2f8db9f1/56149142021.pdfIn PDF document text
    • http://gvs-russia.ru/admin/ckfinder/userfiles/files/47677107952.pdfIn PDF document text
    • http://armanetti.com/images/7778799034.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/jedazitakodanowowozufuv.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/9577119175.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/b8gg2j39j8p9qggch34lfhalrd/87562295069.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/tufuluvo.pdfIn PDF document text
    • http://geometramaurotozzi.it/userfiles/files/sexufizube.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a54bc1fb5---sabiri.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/0ea0ec02eb9818f85d4d11b6dc4c2333/44195314489.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/zajuv.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c9a4b3275---dofenurudufezajadunuxeze.pdfIn PDF document text
    • http://nuocmambason.com/upload/fckimagesfile/b434ec43699bbbb837737005ecf726d6.pdfIn PDF document text
    • http://indianmailbox.com/assets/images/userfiles/files/2300019734.pdfIn PDF document text
    • http://sushiloverca.com/uploads/files/53610969882.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/87054206307.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_off0000db7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF394 11028 bytes
SHA-256: 4f1d3bd9133c5f43522cd0b1b495396890be60c352faab677f0a01a62f0e8bca
font_02_sfnt_off00010d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D14 16976 bytes
SHA-256: 1f496d7ba0c6fdf8e54f618b3f872dfcf94123b8d74affbb0a1951897fda38c7