Malicious PDF — malware analysis report

Static analysis result for SHA-256 42536f7e2818e6c4…

MALICIOUS

PDF

86.4 KB Created: 2021-07-20 13:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: a9964a16d6394ac13e9cbfa8b3bdd7f8 SHA-1: 2e6c363bd09b4b9de20b3eda6f8852f161943f6d SHA-256: 42536f7e2818e6c48bfbaff8957066640f3bd9b91d4cab9561c83a5d6423ef99
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://thebellingerfamily.com/clients/0/05/05034faaa501c69409a7459485cba135/File/1493902192.pdf In PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3a83c6400---82456754865.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/q6ct9hj17blamt8u4qrc3j8c3q/semadadupipudexelirug.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/serudabotolojevikukefuwu.pdfIn PDF document text
    • http://collectifff.be/imgdb/accueil/files/63208167665.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a80f69e0a98---19891692395.pdfIn PDF document text
    • http://statewideroadservices.com/clients/879378/File/fokidenodewuraju.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/95m7ngvdggsq3n49tdlfnoteh5/kaxibejavoluluvesi.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/bdbad4fc277d53961b0f22fc26d8dada/zasaribujifir.pdfIn PDF document text
    • https://rijst.nu/userfiles/file/64250327458.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e195eb6a83---gafuredakidudoxorem.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/josowaborolajaweti.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf94d36ab00---92589526643.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/835c34cb5343799387e9bc120812c8ea/jijitibakiwisozivotida.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7e88b15589---fizeziwavusujadopevod.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a3958a66a80---84328784818.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/6fkia4ikk2et90u7pcmcu131bf/15890495349.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/godinokiles.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/29666855177.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/0aec42447f67fc515a601c3447caadbf/jukego.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/3226d5b504f65793b35cac653202ebcd/2336581015.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b721c062a6e---71870161794.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=direct+indirect+class+10+englishPDF 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_off0000efa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA1 17484 bytes
SHA-256: 9ffc0943f24f915d693c72d8d119938ae7a3d38f38a93fd8c7a7bb4ce79acfef
font_01_sfnt_off00011c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13429 10704 bytes
SHA-256: ca7fbf0fc4ce19156a840446df9ebb4c28b6330994ede2ac96a4342cd6b85327