Malicious PDF — malware analysis report

Static analysis result for SHA-256 5527d4931f0c5acd…

MALICIOUS

PDF

292.6 KB Created: 2022-02-10 21:58:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 9d341b1749e890317d360a91298a36d3 SHA-1: d0cbb8cfa55419334329fdb3e4c1a70ab8b400e8 SHA-256: 5527d4931f0c5acd6d04be91f73a9467b7780a1265033c4a904ee0736921443e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6042

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://cecinacuore.uplinkcrm.it/writable/public/userfiles/file/nosiduviziloxuxifitefux.pdf In PDF document text
    • http://csigikes.hu/admin/fck_upload/file/kadozovuxu.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/94401495023.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210901050539.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/24280170796.pdfIn PDF document text
    • http://www.giuseppe.ru/ckfinder/userfiles/files/vadenopalomotopasaverutod.pdfIn PDF document text
    • http://hanleyresources.com/images/xusafiwenev.pdfIn PDF document text
    • http://investmedic.com/app/webroot/assets/js/kcfinder/upload/files/33009142487.pdfIn PDF document text
    • http://ventilatoryzlin.cz/images/file/23788240382.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/7f1cec6d6bf072423b051d5b9bad1b27/jeladilivetegupifel.pdfIn PDF document text
    • https://sharpconsulting.us/app/webroot/ckfinder/userfiles/files/61625846995.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616f1e5927610---66551840107.pdfIn PDF document text
    • http://checopharma.com/upload/files/fitevibafozez.pdfIn PDF document text
    • http://achwvs.love-mrt.com/upload/files/90340577758.pdfIn PDF document text
    • https://bergeraustralien51.com/caningest/images/file/zutogezebo.pdfIn PDF document text
    • https://sibservis.com/ckfinder/userfiles/files/pizox.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c0d7287ff37---4306806668.pdfIn PDF document text
    • http://medi-sen.com/files/files/numisojopeguxutipomiti.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/mawofafimomipugodusuworib.pdfIn PDF document text
    • http://nitecoreromania.ro/files/file/bagizafagafujelase.pdfIn PDF document text
    • https://fp-002.flexxmedien.com/flexxtrader/data/usf/file/42754726710.pdfIn PDF document text
    • https://zagi.hr/files/17414673700.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/10920947460.pdfIn PDF document text
    • http://ottuk-e.org/userData/board/file/bofaxijivaxazusikufa.pdfIn PDF document text
    • http://tomei4x4.jp/js/upload/files/xasewaxefisefodawi.pdfIn PDF document text
    • http://theclelandgroup.com/img/upload/file/87641728338.pdfIn PDF document text
    • https://takitech.hu/userfiles/file/wapovatufivefen.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611f41b128375---16245554683.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160fb04cef1248---60894050330.pdfIn PDF document text
    • http://isiknakliyatmasko.com/img/editor/image/file/41459828336.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/batovojowo.pdfIn PDF document text
    • https://www.zwaanshoek.info/gibreto-cms/xcrud/editors/kcfinder/upload/files/negulazigawez.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/bffdaaa2c7965f616fdbff93444bb078/zofosozazefuf.pdfIn PDF document text
    • http://rockpapersun.com/upload_mce_image/file/vejawe.pdfIn PDF document text
    • http://form4concrete.ru/pics/cont/file/labulavevuxoliwizi.pdfIn PDF document text
    • http://perfectionistpaintingnj.com/ckfinder/userfiles/files/mebaxinitosexarajemabejor.pdfIn PDF document text
    • https://associazionebriciole.it/public/file/4080732923.pdfIn PDF document text
    • http://knx-shop.ru/admin/ckfinder/userfiles/files/10768435977.pdfIn PDF document text
    • http://e5tbr.alruaa.com/ckeditor-ckfinder-integration/uploads/files/73394513359.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=utada+hikaru+hikari+piano+sheet+musicPDF 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_off00041834.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00041834.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00041834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41834 10932 bytes
SHA-256: 02a27c0012e6d661563fd0b4ae0bf57650905cd0366803a64eba48ccfcc0cf45
font_01_sfnt_off00043160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43160 20784 bytes
SHA-256: 9c7c06eda27c765f1d6b51893c6d9ba1f8d469d9a260b22b96b933e54e9d36f3
font_02_sfnt_off000468f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x468F2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9