Malicious PDF — malware analysis report

Static analysis result for SHA-256 258f596797217f6b…

MALICIOUS

PDF

269.5 KB Created: 2022-03-19 18:48:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 77fdd06a53321468ab0fd28f52d5c0ce SHA-1: 7939ea30bd8f867ba4c2b015a45a92f0f05d84df SHA-256: 258f596797217f6b50e61e29f045e2c653aa8ebecb21e5c4996e361b824bbd1d
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://yubit.co.za/XSRYdR1H?utm_term=learning+arduino+programming+language+pdf PDF link annotation
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1622c2d60cc2f0---wizibekurowekusuv.pdfIn PDF document text
    • http://jerry-cheese.com/kcfinder/upload/files/76108268015.pdfIn PDF document text
    • https://ms02bet.com/contents/files/81531996880.pdfIn PDF document text
    • http://swalaya.in/userfiles/file/10742680217.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/2694765d350217342573a2fd9fccfcd3/wadolanabum.pdfIn PDF document text
    • http://www.abcklima.hu/data/editorfile/winefufujibesuruvamid.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/12534830982.pdfIn PDF document text
    • https://radio-uman.com/kcfinder/upload/files/488901039.pdfIn PDF document text
    • https://tranhtreo.com/images/ckeditor/files/70515618862.pdfIn PDF document text
    • http://watch62.ru/files/files/70680166027.pdfIn PDF document text
    • http://nbaindia.nic.in/includes/ckeditor/plugins/kcfinder/upload/files/pelozaliwofamijeduj.pdfIn PDF document text
    • https://travelbook.kz/kcfinder/upload/files/71994279562.pdfIn PDF document text
    • https://pasarantogel.com/contents/files/xuwojisubigesuvusotazapit.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621710e0c0fc7---wuzadipegabemo.pdfIn PDF document text
    • http://edilcfcostruzioni.com/userfiles/files/1380147086.pdfIn PDF document text
    • https://ego-sofa.tw/uploads/files/202202020045264353.pdfIn PDF document text
    • https://eledigitalpr.it/allegati/file/vusuzifebukabomixuf.pdfIn PDF document text
    • https://gheysenreal.com/uploads/files/51044715327.pdfIn PDF document text
    • http://maradonasalud.com.ar/ckeditor/ckfinder/userfiles/files/68405260578.pdfIn PDF document text
    • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/dodobulofajitijugejadeku.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/a1b29d0a25319899fc48d86e1a07db11/vusapavuxagitanom.pdfIn PDF document text
    • http://kpdb.org/userfiles/files/14255560851.pdfIn PDF document text
    • http://porpora.group/imagenes/imagenes_contenidos///98331157634.pdfIn PDF document text
    • https://mongolia-volkslift.com/uploads/files/25436727787.pdfIn PDF document text
    • https://sluganarodu.org/userfiles/files/3778288529.pdfIn PDF document text
    • http://aurora-c.jp/files/files/12031329371.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/162218e6a73e7a---pitafudulogerixobopog.pdfIn PDF document text
    • http://tehnaplus.mk/tehnaplus/kcfinder/upload/files/teratudal.pdfIn PDF document text
    • http://papinchess.ru/userfiles/file/guwilukobixozotaluna.pdfIn PDF document text
    • https://www.ogsb.org/asset/ckeditor/kcfinder/upload/files/nelavakog.pdfIn PDF document text
    • https://allcondosales.rodeodrivecondosale.com/userfiles/files/bilexotagedafuxilo.pdfIn PDF document text
    • http://kidzcastleschool.com/singhania/downloads/file/busenafi.pdfIn PDF document text
    • http://suriyedostlukdernegi.org/image/files/20296053625.pdfIn PDF document text
    • http://desushibar.com/userfiles/file/fexexajotodapisaw.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_off0003c6fb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003c6fb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003c6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C6FB 10632 bytes
SHA-256: 5c40bd0e7047740f5802e81f8a2b62ad9a3948458a44e9e729e04a6b5b950155
font_01_sfnt_off0003def8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DEF8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003f613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F613 18348 bytes
SHA-256: 52b771c1681389e50db691e57b9520a12c578b13d858e46b7110ca165d09a859