Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99bf00cbe77553d…

MALICIOUS

PDF

80.6 KB Created: 2021-10-17 00:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: f2d991ba2a85975eca0e5a819774cb7e SHA-1: 5c003e9a39a020fe8032509b38613cae37f65b75 SHA-256: f99bf00cbe77553de2e8f32973351fd43cffbb348b5691b58f2c7f35df8c6a7a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • 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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://drafthe.ru/uplcv?utm_term=the+number+6+meaning+in+the+bible PDF link annotation
    • https://agregadoschucuri.sinecsas.com/ckfinder/userfiles/files/gipetufixanesetagewixuv.pdfIn PDF document text
    • https://duel.pl/userfiles/file/21736577223.pdfIn PDF document text
    • http://avalon-essenzen.at/userfiles/file/lokopoziropubibu.pdfIn PDF document text
    • http://ekogamma.pl/javascript/ckfinder/userfiles/files/betenosuwixoj.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614d42eae5292---85974993778.pdfIn PDF document text
    • http://vikingpaint.com/user_file/file/lodetesakurogajig.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/61451233517.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/2971823807.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/23941184277.pdfIn PDF document text
    • https://jagamimpi.com/contents/files/bamenalabikubivoruj.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/telekizu.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/90933227886.pdfIn PDF document text
    • http://topbondtape.com/uploadss/file/leropujagorapuvajetir.pdfIn PDF document text
    • http://www.photonics-science.com/ckfinder/userfiles/files/70351633928.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/3a89216e0b909cf5a04682f97c3c0cc2/mezunodafutife.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/56743543604.pdfIn PDF document text
    • https://alhasooncorp.com/Files/files/vilojuwesuwitepudijoxemud.pdfIn PDF document text
    • http://yousefmaktabi.com/ckfinder/userfiles/files/6144652518.pdfIn PDF document text
    • http://vlajamo.cz/images/file/gefezopagubudepuv.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/d1e11dbc8151ef15483151a6c7eef4ab/80503056697.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16137026ce2088---63817851907.pdfIn PDF document text
    • https://refakatci.net/userfiles/file/nivikidulamu.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1615dc27ee7c81---wafan.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_off0000d8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E2 17252 bytes
SHA-256: 322767252dd3caa51bd770ebd09ad92615d3658767a81782c576742333706040
font_02_sfnt_off00011c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C89 10640 bytes
SHA-256: 0152c4128283acbd84353a8f7d5b1bf2d83da10d246a9b35885ab062d841583b