Malicious PDF — malware analysis report

Static analysis result for SHA-256 191108691c3b8b5b…

MALICIOUS

PDF

266.9 KB Created: 2022-03-07 06:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: df77a773d5cfe442ff5c284d4445baf3 SHA-1: af7c7257155b4004700aee567ba3ed246f917357 SHA-256: 191108691c3b8b5bdfe2f5fa557eaefa69c84eb5359a002a349499bf951e432c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6963

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
  • 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://cafij.co.za/XSRYdR1H?utm_term=naming+alkenes+and+alkynes+pdf PDF link annotation
    • http://baikalsg.ru/uld/files/54068333278.pdfIn PDF document text
    • http://imdad-egypt.com/userfiles/file/datis.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2022030218465073499.pdfIn PDF document text
    • http://sankoux.jactokai.net/kcfinder/upload/files/rolavenovukanuxopatotiwu.pdfIn PDF document text
    • http://duhocvangsang.com/ckeditor/kcfinder/upload/files/sigegujemalagunuturefa.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/velisasa.pdfIn PDF document text
    • http://soc-in.com/data/media/files/57997250516.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/3411084363.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/dekitozakajerorunewewigul.pdfIn PDF document text
    • http://tcpartners.vn/kcfinder/upload/files/rapafosenopagaz.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/14564777382.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620025f63a9ea---83600160953.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/38503e105272cc34aa29efae6ea3f7e3/wunetoduseje.pdfIn PDF document text
    • https://hotelharmika.com/assets/userfiles/files/34041451749.pdfIn PDF document text
    • http://zjnep.com/ckeditor/ckfinder/userfiles/files/xanobijudonu.pdfIn PDF document text
    • http://dichvuhieuchuan.com/upload/files/nizemi.pdfIn PDF document text
    • http://geshome.co.jp/cmsdesigner/kcfinder/upload/files/xedadodepop.pdfIn PDF document text
    • http://suachuamaydemtien.biz/userfiles/file/93295477850.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/78360098138.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///87550212757.pdfIn PDF document text
    • https://albizy.com/ckfinder/userfiles/files/91570742811.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/6ebe8698119d790dd0bef6ac6bec7171/dezebi.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/77753251204.pdfIn PDF document text
    • http://logicamail.it/draft/media/juvibizivu.pdfIn PDF document text
    • http://pbwi.com.pl/admin/kcfinder/upload/files/59701014556.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/vatowuvinudakegovojafadat.pdfIn PDF document text
    • https://naukriguru.com/php/uploads/file/54016661977.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios/files/fazipunij.pdfIn PDF document text
    • https://chemainus.gocascadia.com/images/cms/file/nurexanukakegujin.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_off0003bce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BCE8 10708 bytes
SHA-256: 971cc89fbe4ba71ce63acb1554ee9dfead8a58bf362037850d91c4473ccedcf2
font_01_sfnt_off0003d53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D53A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003ec55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EC55 18492 bytes
SHA-256: 03437d806b18c57d269858c59ce7b8b8e6577dfc08dc8572fc1a89a70c1a3575