Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddcd33c53a4f440…

MALICIOUS

PDF

80.7 KB Created: 2021-09-19 13:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 6930453cb2921c9add76e14510ffbf2e SHA-1: d10ab12a782e2e7409e7bb33210aac25b4f99007 SHA-256: 3ddcd33c53a4f440d2e06bdb6247da90c49c9e8f375a2cb38e6748c86e2d0330
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=aplicacion+para+actualizar+software+android PDF link annotation
    • http://hoangduy.vn/vn/files/fofafexu.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/42642474128.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/wuxufusovazizapadazoj.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/b5a4924d6b7fe2c97416231b95acd67e/43300052074.pdfIn PDF document text
    • https://psychotherapie-coeppicus.ch/upload/file/89638475045.pdfIn PDF document text
    • https://drbumbnursinghome.in/ckfinder/userfiles/files/vipezewuzodovebu.pdfIn PDF document text
    • http://rlmlaw.com/images/edit_images/file/nekepoledojixumubekadis.pdfIn PDF document text
    • https://varbackaforskola.se/ckfinder/userfiles/files/56814679385.pdfIn PDF document text
    • http://www.ez4parcel.net/upfile/files/2021/09/15/xutojudanitifolubuge.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/15110503567.pdfIn PDF document text
    • https://creativenursery.net/home/creative/public_html/ckfinder/userfiles/files/sumugofedonumiz.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135048cb9f5a---38634094418.pdfIn PDF document text
    • http://inwama4.vn/webroot/img/files/75148718567.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/3196181154.pdfIn PDF document text
    • http://cuadepthanglong.com/images/ckeditor/files/zogojijasawiloka.pdfIn PDF document text
    • https://coop-alternatives.fr/images/images/zewuwewabasubexixije.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/fexukuvenipiwelajuz.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16144e50107b03---gumubejebiwufilurali.pdfIn PDF document text
    • http://ekotop.eu/userfiles/file/jebadufavarodus.pdfIn PDF document text
    • https://www.ijmsir.com/ckfinder/userfiles/files/jureniz.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/ecf3f08d0451f2926674534c673e0a2a/3593239291.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/maditisanonuzozixixuropi.pdfIn PDF document text
    • http://skolky.info/foto/images/file/60560902556.pdfIn PDF document text
    • http://radyoislam.com/resimler/files/xolatoxopakofovijovap.pdfIn PDF document text
    • http://topp.pl/_topp/file/91037272476.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_off0000d506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD506 10840 bytes
SHA-256: c7cff412196bde81178401c7820f4b029aa69f72699a0374d29de09319e81886
font_01_sfnt_off0000ee58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE58 17752 bytes
SHA-256: 70c7ebd157cbf8e279227f17cf246dcb79d035a93b1fb1b548bbcaec663a12fa
font_02_sfnt_off00011b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1