Malicious PDF — malware analysis report

Static analysis result for SHA-256 793a11893b65c57d…

MALICIOUS

PDF

84.5 KB Created: 2021-11-03 01:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: ab681310d760cfa9f6a0575a9ded3ded SHA-1: 89e212f546d90f2eb72efb00b3f3820975632ed3 SHA-256: 793a11893b65c57dc9f72f4853b874898b40b239d80a57422191867c0913cc83
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://dolphinsolutions.net/ckfinder/userfiles/files/34510935276.pdf In PDF document text
    • http://crabandclaw.com/uploads/files/24331857656.pdfIn PDF document text
    • http://purofirstli.com/userfiles/files/rajosof.pdfIn PDF document text
    • http://shbaicun.com/userfiles/file/2021101004361573499.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615f0b43ec367---sajuzudevot.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/nizukowiresogivap.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/mamov.pdfIn PDF document text
    • http://longarmquiltingacadamy.com/fckeditor/userfiles/file/pubadujuzavifavawewineke.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1617945bc43a4d---velogiguwaverabajukexizu.pdfIn PDF document text
    • http://www.sunriseacademy.in/ckfinder/userfiles/files/52360014828.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/17759951601.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/12832378265.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/8d91313511aa428ba2ece7e5dda6bff0/zekusejakilekow.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/pazodi.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16162f80b79611---gexabip.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d3c5af3894---rudotu.pdfIn PDF document text
    • https://excore.hu/ckfinder/userfiles/files/pojatogutenologunojifajet.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/dibujijerasuxofofuwus.pdfIn PDF document text
    • http://plncse.hu/php_data/file/574633427.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/17962237188.pdfIn PDF document text
    • http://zhizhencn.com/filespath/files/20211020032144.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/fezurena.pdfIn PDF document text
    • https://hoya.hr/UserFiles/file/pibenedex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/oscUj7J0Gjw/uplcv?utm_term=device+manager+apk+downloadPDF 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_off0000e31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2D 18652 bytes
SHA-256: c0fbe107a5733964530e3ad659f4f9265218ca76e2badf184708819258358e0c
font_02_sfnt_off00012b89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B89 10836 bytes
SHA-256: 8bd8d90cb24e751d6612f2bc610dc7235492e9d8b96187df8dcb651af7aafc97