Malicious PDF — malware analysis report

Static analysis result for SHA-256 44163fb6282f6314…

MALICIOUS

PDF

390.3 KB Created: 2022-02-05 17:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 5e0563181c93f45b1eacabc28267bae8 SHA-1: e71128a43e2a5aef7393d4a2d95e85ef7746589c SHA-256: 44163fb6282f63146a31c63e0e19cbeee69414d16998160f02fe246011d7c27d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9021

Heuristics 5

  • 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.
  • 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://ominocoibaffi.it/userfiles/files/morivadojod.pdf In PDF document text
    • https://kondoreskiss.hu/term_extr/files/9798520404.pdfIn PDF document text
    • http://poliambulatorioargentina.eu/userfiles/files/bogavinowofir.pdfIn PDF document text
    • http://goupcrm.com.br/kcfinder/upload/files/98174113897.pdfIn PDF document text
    • http://xn--80aa5alfu.kz/file/sinaniw.pdfIn PDF document text
    • http://iba.education/kcfinder/upload/files/30739160717.pdfIn PDF document text
    • https://guclupin.com/calisma2/files/uploads/30980393125.pdfIn PDF document text
    • https://humicdp.com/uploads/2021-07-06/images/files/65512439672.pdfIn PDF document text
    • https://mepho.hu/ckfinder/userfiles/files/86801786143.pdfIn PDF document text
    • https://nodka.eu/ckeditor/ckfinder/userfiles/files/30069178329.pdfIn PDF document text
    • http://unitec-egypt.net/userfiles/file/25323053825.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/161749151eb1a4---zalojuxinisanezokotumiw.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/kugitepixab.pdfIn PDF document text
    • https://szallas-karpatalja.net/upload/gipixajatofubixop.pdfIn PDF document text
    • http://www.lasallelille.com/admin/ckfinder/userfiles/files/90637976855.pdfIn PDF document text
    • http://newdimension.su/userfiles/file/60248736501.pdfIn PDF document text
    • http://vanprodukt.cz/UserFiles/File/fojavalaxalajava.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=kausalitas+sejarah+pdfPDF 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_off0005ae65.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005ae65.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005ae65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE65 17168 bytes
SHA-256: 838f0625024c65e851688f0c637b2c5c55331c939fde9bf15de66270edf216f2
font_01_sfnt_off0005dbc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005f2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E1 10592 bytes
SHA-256: f0312b7df213a1d516527b8b4c1cb460454d944fe9e948f639a269ad8a74f44e