Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afacc28571502a5…

MALICIOUS

PDF

487.1 KB Created: 2022-03-30 05:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: db804040d52894375cb4e5a2483a8279 SHA-1: 20649fe16a3fb87cd202797c647daeee89e81ab4 SHA-256: 4afacc28571502a5f278a72fb08fb67db094c52f36ee4d02faba7eafb751efc7
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3788

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=melhores+livros+ma%C3%A7onaria PDF link annotation
    • http://www.pnl.ac.id/asset/kcfinder/upload/files/42526996300.pdfIn PDF document text
    • https://marketlayer.com/assets/kcfinder/upload/files/mimoximoture.pdfIn PDF document text
    • http://sibmaxi.ru/userfiles/file/zabenajomaka.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/79405305959.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/7b2331ae4217f9b2b384700854f12655/90758453527.pdfIn PDF document text
    • https://jomozupofaku.weebly.com/uploads/1/3/4/3/134399246/1489142.pdfIn PDF document text
    • http://shriramashramssschool.org/userfiles/file/wirimo.pdfIn PDF document text
    • https://ruwufinojib.weebly.com/uploads/1/3/4/6/134643146/e4473026dd6.pdfIn PDF document text
    • https://kogozifimasubi.weebly.com/uploads/1/3/4/1/134131491/xidugavan.pdfIn PDF document text
    • https://rubfila.in/files/file/firujaradik.pdfIn PDF document text
    • https://fumunagik.weebly.com/uploads/1/3/4/5/134520136/vulunesozefasuzi.pdfIn PDF document text
    • https://lusovajilabijix.weebly.com/uploads/1/3/5/3/135351537/4978992.pdfIn PDF document text
    • http://xhzhengli.com/upload/ranaximetaxavefuzoroz.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/bb48d10a8d58c0f6c670264f14449ef9/32707505994.pdfIn PDF document text
    • https://kaxijegomodonot.weebly.com/uploads/1/3/4/4/134496279/4878195.pdfIn PDF document text
    • http://one9five.com/userfiles/files/fisakesafolerom.pdfIn PDF document text
    • https://bameveba.weebly.com/uploads/1/3/4/1/134108569/6202253.pdfIn PDF document text
    • https://jevetokisavov.weebly.com/uploads/1/3/3/9/133997370/6785410.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1623d567f43b6d---25929315268.pdfIn PDF document text
    • http://apartmany.cucoriedka.sk/data/files/nidujuba.pdfIn PDF document text
    • http://feriasaludybelleza.com/aym_image/files/56123302280.pdfIn PDF document text
    • http://kifei.ru/files/files/7092002923.pdfIn PDF document text
    • http://usneseni.eu/foto/image/files/13386439625.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/a02a4c6074d6ac5a92f1f461ab84b3e1/mamovunodogogaj.pdfIn PDF document text
    • http://the100voicesofgospel.de/fichiers/newsletter/file/labezikirinizedugipat.pdfIn PDF document text
    • https://tivirubopif.weebly.com/uploads/1/3/1/4/131406506/9667356.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/poreren.pdfIn PDF document text
    • https://varigero.weebly.com/uploads/1/3/4/4/134443598/mojanesajawosurodu.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16226fc3a2a4ae---valukojafebumawogesuve.pdfIn PDF document text
    • https://powiedzdoktorze.pl/file/files/kafatotapibore.pdfIn PDF document text
    • https://polytechnik21.ru/images/news/werirejupukopozisupepewa.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/bajomer.pdfIn PDF document text
    • http://danamthanh.vn/userfiles/file/19317707596.pdfIn PDF document text
    • https://www.highlandernepal.com/assets/ckfinder/userfiles/files/57346809764.pdfIn PDF document text
    • http://dharkaninternational.com/survey/userfiles/files/84462800208.pdfIn PDF document text
    • http://tongchangkj.com/uploadfile/file///2022021206571963.pdfIn PDF document text
    • https://www.peace4r.com/assets/admin_panel/js/kcfinder/upload/files/5922692835.pdfIn PDF document text
    • http://dolonchem.com/upload/files/79174176060.pdfIn PDF document text
    • https://schoolerp.stembridgelabs.com/userfiles/file/89180347684.pdfIn PDF document text
    • https://bulendengin.com/upload/ckfinder/files/vepekofedatizajudexazones.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/8e5522194bfe0c2e596f9b9e008411d8/gusiromufizinowuwap.pdfIn PDF document text
    • https://lukadivosegiga.weebly.com/uploads/1/3/4/6/134679105/3a95aa4e88e7aac.pdfIn PDF document text
    • http://i-physiology.ru/upload/84353956227.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
    +2 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000723e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723E8 10532 bytes
SHA-256: aebd9bcbb8265c2ae440722451c5bd4c1189bb62f5e9a486c4b9bbf05e222a71
font_01_sfnt_off00073bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BB5 21996 bytes
SHA-256: 640a90cdf7da6e819f22d8808c0c7ee4a4f8962de2c17f7c2dc655714766a954
font_02_sfnt_off00077313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77313 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9