Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afabb09ece7e738…

MALICIOUS

PDF

79.8 KB Created: 2021-09-11 18:20:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 25b9cf8690b1a851b430679d8cb45633 SHA-1: 41c9319dd425da080f8e87332831699a2dd059c4 SHA-256: 4afabb09ece7e738555bdbd09ff81f335f9fae7e42ea2b275b630f37f3fae03f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://nprofit.hk/userfiles/fajorubibumuzun.pdf In PDF document text
    • http://rana-international.com/userfiles/files/besumolegagunu.pdfIn PDF document text
    • https://suacuacuontoanphat.com/upload/files/91632413366.pdfIn PDF document text
    • https://shellserva.nl/docs/Image/file/pemunid.pdfIn PDF document text
    • https://aynadakikemalizm.com/resimler/files/rinebotutaves.pdfIn PDF document text
    • http://caydinhlang.net/userfiles/image/file/jajoputixukudodufemoga.pdfIn PDF document text
    • http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/ranikaxenenogaserurutemeg.pdfIn PDF document text
    • https://nstyapi.com/resimler/files/72731672127.pdfIn PDF document text
    • https://cottonweb.net/userfiles/file/71623703598.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/56788882780.pdfIn PDF document text
    • http://albertopizzetti.it/userfiles/files/lewozatale.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/9860360003.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613970a14ef1c---31756254445.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/bazometedixuwanebos.pdfIn PDF document text
    • http://e-kva.ru/admin/ckfinder/userfiles/files/84005538965.pdfIn PDF document text
    • http://dansungsala.com/uploads/files/44842412055.pdfIn PDF document text
    • https://aneri12.eu/res/file/4099371260.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/9da09ebbd6ec729fc3ef40c766b426c9/tojala.pdfIn PDF document text
    • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/7830312405.pdfIn PDF document text
    • http://basaritarim.net/admin/editor_resim/file/12333489595.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/14039056690.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/7renm5kr3i6pmkfjuak9pi06tu/3550041736.pdfIn PDF document text
    • https://ecpa.fr/uploaded/file/kuritobom.pdfIn PDF document text
    • https://comtraining.cl/userfiles/files/fezolulu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=aplikasi+tv+offline+apkPDF 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_off0000d44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44B 10388 bytes
SHA-256: 6bbd8580e7343f32cc2c2a6bd1399f189d74ad9e6d41292def8a4ff65e2f32b2
font_01_sfnt_off0000ec0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10420 17484 bytes
SHA-256: ddffd8ea75bdc2c7fb209bd5b9851d67eb75bcf67bdeb011524c00ee82466fa0