Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f1b471a6e6e1eb…

MALICIOUS

PDF

220.1 KB Created: 2022-03-03 02:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: af8d4a7557639b32a990bad602d8847c SHA-1: 4620870e0fa1430d926920cb988ad12a8f52bbc6 SHA-256: a4f1b471a6e6e1eb5d35c51749672c182ab8be70660daa41e043b478431e6790
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8340

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://podar.co.za/XSRYdR1H?utm_term=aka+jehovah+lyrics PDF link annotation
    • http://krevue.cz/UserFiles/File/gowurelukusok.pdfIn PDF document text
    • http://flynewsletter.com/uploads/file/vadixoloku.pdfIn PDF document text
    • https://calprin.com/ckfinder/userfiles/files/78153544170.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/al8d1g1pal06tfsa780qhkoecr/wililivax.pdfIn PDF document text
    • http://dmkert.hu/files/file/jijuzitosuwagimozen.pdfIn PDF document text
    • http://www.grupotresa.com/uploads/kcfinder/upload/files/97770714501.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/16027437025.pdfIn PDF document text
    • http://ilsogno-bomboniere.com/userfiles/files/5188951174.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/xuwumokojaninenovelemabu.pdfIn PDF document text
    • https://lengthening-sldf.fasamra.com/userfiles/file/79960870596.pdfIn PDF document text
    • https://norservis.info/files/files/rutokizewukuz.pdfIn PDF document text
    • http://tangiahoang.vn/Images_upload/files/papurenasiw.pdfIn PDF document text
    • http://zeci.nl/im/image/92209111414.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b72a0ca95730bcd790e849d27e888840/kejujili.pdfIn PDF document text
    • http://lotyzapoznawcze.pl/cms/files/falevimadofenaxekafa.pdfIn PDF document text
    • https://namphuctourist.com/userfiles/file/20349791913.pdfIn PDF document text
    • https://terrebleue.org/userfiles/file/sekotiwuwesekawikilo.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/tasegufupufizupepalare.pdfIn PDF document text
    • http://freeware-software-download.de/uploads/editor/file/vojesunulifisa.pdfIn PDF document text
    • https://przedszkolenisko.pl/userfiles/file/63503564334.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620866dbe4cf6---mixugejuf.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/ji5gssovvd8649at4q17p9aaln/38060264432.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/zumoponelaxusuwerutobir.pdfIn PDF document text
    • http://eksternest.be/images/file/redukovazo.pdfIn PDF document text
    • https://bangvetthuong.com/luutru/files/1174709554.pdfIn PDF document text
    • http://losaltos.com/wysiwygfiles/file/fitalozibo.pdfIn PDF document text
    • https://www.pianoeg.de/admin/ckeditor/kcfinder/upload/files/37978054108.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/xaminufevelu.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/b8qj0sunae9umnctqd2ng7es25/sigemoj.pdfIn PDF document text
    • http://sayarbobinaj.com/file/remomuzerinem.pdfIn PDF document text
    • https://munkenpo.or.jp/kcfinder/upload/files/83269978817.pdfIn PDF document text
    • http://bong-dem-long.org/upload/editor/files/17298278948.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/gigivasitugusade.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_off000300db.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000300db.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000300db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300DB 18864 bytes
SHA-256: a54f6766d02bca65362685cbabce8e08bb8acc7f44092a36ffeab4903265ded9
font_01_sfnt_off00033202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33202 10508 bytes
SHA-256: a909bad45dcdfb966ca7e8e36d8a2d9c8ba87cc9de69a19d89b69473da9d4580
font_02_sfnt_off00034a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A11 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9