Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b87556271ed00c…

MALICIOUS

PDF

438.2 KB Created: 2022-03-09 10:45:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: f37ae8c666dd0b20662e211b83673cad SHA-1: 7cb90f06b135da74a02f096830eac117d6538571 SHA-256: 72b87556271ed00cf9ad26b81507724b120c5f1c6eb10a3615a18b0ffef8f197
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5256

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://wirut.co.za/XSRYdR1H?utm_term=angry+birds+classic+hack+mod+apk PDF link annotation
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/56685499297.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/03decba85f02aaefeeb7ce42f954cb16/83060598108.pdfIn PDF document text
    • http://snc.easy-event.net/img/uploads/files/mupatotadezupalozutam.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/1bc0526bae9d5ec25b862215d02e5452/zuzokuruwevikelumonim.pdfIn PDF document text
    • http://gsmontaggi.it/userfiles/files/foput.pdfIn PDF document text
    • http://healthmindsacademy.com/admin/ckeditor/kcfinder/upload/files/52407402756.pdfIn PDF document text
    • http://pyramidplaster.com/file_media/file_image/file/dobolej.pdfIn PDF document text
    • http://druckmaschinenservice.com/uploads/fce/files/jatugub.pdfIn PDF document text
    • http://www.conepe.org.br/public/ckeditor/kcfinder/upload/files/71505515522.pdfIn PDF document text
    • https://topas-rus.ru/media-temp/img/uploads/files/74346473543.pdfIn PDF document text
    • http://yesfabric.com/images/upload/File/gepomawonavaxanu.pdfIn PDF document text
    • http://plymouth-logs.co.uk/ckfinder/userfiles/files/19684127381.pdfIn PDF document text
    • https://henseltech.cz/userfiles/file/mazugovujinuruzujivanez.pdfIn PDF document text
    • http://amis-simserhof.fr/kcfinder/upload/files/79352922870.pdfIn PDF document text
    • http://cleangroupbd.com/ck/upload/files/nisofasu.pdfIn PDF document text
    • http://ww2.forte.com.pl/js/ckeditor/kcfinder/uploads/files/zuxewedegasesedofalikox.pdfIn PDF document text
    • http://biplano.eu/userfiles/files/pezog.pdfIn PDF document text
    • http://ailin.kz/js/kcfinder/upload/files/guzupe.pdfIn PDF document text
    • http://smm-mm.com/uploads/news_file/54456018490.pdfIn PDF document text
    • http://eros-arena.de/eros/userfiles/file/magilitubitusapezotatef.pdfIn PDF document text
    • https://pannonfinanz.eu/editor_up/10992639867.pdfIn PDF document text
    • http://elmakoleji.k12.tr/public/kcfinder/upload/files/3343301068.pdfIn PDF document text
    • https://youngshiny.com/userfiles/file/1644180928.pdfIn PDF document text
    • https://szerokiewody.pl/files/files/luxevilaziv.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/a69817d4311020e667fddf1f9cc72551/pamavevogaxokapezurofiw.pdfIn PDF document text
    • http://boldogelet.hu/media/63972069792.pdfIn PDF document text
    • http://canlook.ru/userfiles/files/87995290777.pdfIn PDF document text
    • https://infrapanel-alegjobbfutes.hu/userfiles/file/vakasekujiradivapereduzo.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/wikabamenenuzew.pdfIn PDF document text
    • http://apmweb.almaproject.it/public/userfiles/file/85244088744.pdfIn PDF document text
    • http://gestaocipa.com/public_html/Imagens/file/21789693635.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1621bf891be7fd---toxulaxifomumijobapufo.pdfIn PDF document text
    • http://finproekt-msk.ru/userfiles/file/vijadakumifegigopu.pdfIn PDF document text
    • https://dermatologie-chamonix.com/userfiles/file/73144110227.pdfIn PDF document text
    • http://dogoducthien.com/uploads/files/kupotepuketet.pdfIn PDF document text
    • http://eaupureinternational.com/userfiles/file/89025007538.pdfIn PDF document text
    • http://ibookingkr.com/FileData/ckfinder/files/20220202_2F68573938B96917.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/7178050136.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/bisudonavubepibed.pdfIn PDF document text
    • https://xn--80aesyq.xn--p1ai/files/file/74259642249.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_off00066951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66951 18076 bytes
SHA-256: 730adfc4c8e1eccd493b94100b367ea629c53f637bcd9c4609e276adb72049f2
font_01_sfnt_off0006987f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6987F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0006af9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9F 11056 bytes
SHA-256: 45ff89c2bd4c5008b0e55588452ef68f08e4567e66ad6dda8048788f37b811f5