Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de8a52b1be167a3…

MALICIOUS

PDF

415.5 KB Created: 2022-04-19 19:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 5b15ac2249e609d47ab47e546ff01605 SHA-1: e7bcd1d2aed5a06a095891e21a789af384e00514 SHA-256: 4de8a52b1be167a355f557a0b9361cb41f7bc4da5b4c97d46257a20440bc9b84
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4903

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://dm288.rs/slicice/file/97264805254.pdf In PDF document text
    • https://perechen-izdaniy.ru/js/ckfinder/userfiles/files/kikamid.pdfIn PDF document text
    • http://sys-svinding.dk/userfiles/file/fozigofumikezif.pdfIn PDF document text
    • http://hb-hospital.com/file_upload/fck_upfile/file/47645547257.pdfIn PDF document text
    • http://medianet2000.net/amm_prod/image_news_popup/file/35214066271.pdfIn PDF document text
    • https://firstrecycler.oltenia-imobiliare.ro/userfiles/file/supuripefemokakujupug.pdfIn PDF document text
    • https://badanie-wody.pl/galeria/file/fozijuj.pdfIn PDF document text
    • http://coffeexclusive.co.uk/kcfinder/upload/files/72181786667.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1622462fa74e92---88763154198.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/55090153441.pdfIn PDF document text
    • https://sumewawuvivifos.weebly.com/uploads/1/3/1/3/131380344/814614.pdfIn PDF document text
    • http://yonetim.e-cari.com/upload/files/4967842185.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/162328f7bce6d9---82878808453.pdfIn PDF document text
    • http://caudafotografia.com/userfiles/files/90043597618.pdfIn PDF document text
    • https://damixibid.weebly.com/uploads/1/4/1/5/141503353/bujuwejo.pdfIn PDF document text
    • http://eidatlantique.antevox.fr/UserFiles/medias/foliletovome.pdfIn PDF document text
    • http://blueleaves.ru/userfiles/file/vipexabefabufiwatigog.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/8fb8572d9f054de68c0cd3e4a0d354de/13966530423.pdfIn PDF document text
    • https://zigifivabukom.weebly.com/uploads/1/3/4/4/134460242/9112293.pdfIn PDF document text
    • http://www.razitka-conti-trodat.cz/kcfinder/upload/files/matumu.pdfIn PDF document text
    • http://partnerplus30.ru/images/fornews/files/75639500829.pdfIn PDF document text
    • http://chestheart.org/assets/ckeditor/kcfinder/upload/files/87756937023.pdfIn PDF document text
    • https://fcimoveis.com/imgs/file/jixajixibe.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/koragi.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/9136011518.pdfIn PDF document text
    • http://didongsinhvien.com/upload/files/53308009579.pdfIn PDF document text
    • http://www.mmalappeenranta.com/tiedostot/files/madibikivitusuwibat.pdfIn PDF document text
    • https://tesekagaz.weebly.com/uploads/1/3/4/3/134342497/gemilonanejuk.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/4957b0f958c3063e9e25ca21bd16915f/muzesizevimitip.pdfIn PDF document text
    • https://nazoturifebigik.weebly.com/uploads/1/3/1/6/131606271/vipop_togulu_pifokamosuf_rudoj.pdfIn PDF document text
    • https://ehotelgateway.com/bot/ckfinder/uf/files/dukobuveto.pdfIn PDF document text
    • https://cmflower-kkc.com/ckfinder/userfiles/files/xivuk.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1620bcb54d8995---wewowa.pdfIn PDF document text
    • http://vtdsbinhthuan.vn/public/uploads/userfiles/file/xuranovujagilapilozadeloj.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=notice+of+cancellation+letter+templatePDF 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 extracted file (font_00_sfnt_off00060f1a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00060f1a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00060f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0006272c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6272C 18000 bytes
SHA-256: e4d43a73f7c958fc93f6f02117829d75be4591e96371e2281a6d488f7a173e4e
font_02_sfnt_off00065661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65661 10448 bytes
SHA-256: 77681b2158100b9065ed3ffc053514e79e8bbb1b3556934592fefbd825a787ac