Malicious PDF — malware analysis report

Static analysis result for SHA-256 55278e3f95a8280c…

MALICIOUS

PDF

359.8 KB Created: 2022-03-05 23:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: c408acecb8b1b1f1adca08f460b27561 SHA-1: 90a02420d653df155fabbd05e236fee5b66fecca SHA-256: 55278e3f95a8280c52ce97cda18a65cfd2e4045ef0f8c8000df4b76f0765faff
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5960

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://cafij.co.za/XSRYdR1H?utm_term=free++ben+10+cartoon+images PDF link annotation
    • https://ijestr.com/ckfinder/userfiles/files/50232792293.pdfIn PDF document text
    • http://auroraenergyproject.it/userfiles/files/16005033672.pdfIn PDF document text
    • https://eksiliotomotiv.com/upload/ckfinder/files/rolobajunomujakixir.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1620c451e54e1c---xulipixizosodeze.pdfIn PDF document text
    • https://paintingwithapassion.com/nbloom/fckuploads/file/xujosatigodogukenolagu.pdfIn PDF document text
    • http://cocoon-source-harmonie.fr/public/file/99909285568.pdfIn PDF document text
    • https://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/72577523472.pdfIn PDF document text
    • https://www.studioline.ie/ckfinder/userfiles/files/zeluzuwanufuxuzodusu.pdfIn PDF document text
    • http://livilgirls.com/files/gudurelotegose.pdfIn PDF document text
    • http://labotinnghia.com/img/files/45238610424.pdfIn PDF document text
    • https://postelezmasivu-liberec.cz/ckfinder/userfiles/files/64753203690.pdfIn PDF document text
    • https://www.icdsa21.scrs.in/kcfinder/upload/files/25929720251.pdfIn PDF document text
    • https://cosonnguyenthanh.vn/webroot/userfiles/files/tifumokuwigasulewubi.pdfIn PDF document text
    • http://alconsprom.ru/ckfinder/userfiles/files/dovezukone.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/kevewibijoju.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1620a94f2a1179---62431963193.pdfIn PDF document text
    • https://euforbiabulgaria.gbinvest.net/uploads/pages/files/59407754006.pdfIn PDF document text
    • http://c2r.su/uploadfiles/file/2022021616460773499.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1620762c1e9630---95459672696.pdfIn PDF document text
    • http://narcisse.sk/editor_uploads/files/gulirol.pdfIn PDF document text
    • http://pro-roubenky.cz/UserFiles/File/zoboxod.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fd9aa908196---bulasolopatefov.pdfIn PDF document text
    • http://beauty214.com/uploads/files/202202232245048357.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2022021810483973499.pdfIn PDF document text
    • https://lajhajjar.com/userfiles/file/patenerepole.pdfIn PDF document text
    • http://biemmecommerciale.eu/userfiles/files/26217970057.pdfIn PDF document text
    • https://www.starvisaservices.co.uk/application/elements/plugins/kcfinder/upload/files/xitujonevos.pdfIn PDF document text
    • http://eapver.com/upload/ckimg/files/202202080150135537.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/lr5k6vdbb1nk25eeq6okeeghal/pavuxitasefasuxev.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/61942342936.pdfIn PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/posibigasok.pdfIn PDF document text
    • http://chmer.yun2u.com/upload/files/49080705707.pdfIn PDF document text
    • http://gumho.puruemi.com/userData/affis_board/file/26338439968.pdfIn PDF document text
    • https://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/68843193501.pdfIn PDF document text
    • http://campfirewtx.org/userfiles/file/mogajujuboritizedilik.pdfIn PDF document text
    • http://idolyokocho.com/js/ckfinder/userfiles/files/josasi.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 extracted file (font_00_sfnt_off00052489.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00052489.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52489 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00053b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B9F 2680 bytes
SHA-256: 382ce99aea4469f0c1e1477ae1bcd06b736c2ce731d4a283ed2f2b13810a35d6
font_02_sfnt_off00054702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54702 10816 bytes
SHA-256: ee18574e098d628fafe554e3322552c8ee80952a717ba55d9bf28b76c9f8e7fa
font_03_sfnt_off00055ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55FFC 18032 bytes
SHA-256: 7384785f71ebd77b35d0187aa289018d2285c2c9cc139e48f5e2b0d9de0779c5