Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b3722e9b69da7c…

MALICIOUS

PDF

301.6 KB Created: 2022-03-03 03:07:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 53d52de72a51179f2cded0d5809f8f89 SHA-1: 0fc1ee9f07a4026b5a9b06834ee32a86c9f8c05e SHA-256: a8b3722e9b69da7c5b5ab7971abf4f179664223d39f4176b87cfaa65f3e9a4bd
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7534

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://yoyep.co.za/XSRYdR1H?utm_term=bhairava+movie+hd+wallpapers PDF link annotation
    • http://jmk.kr/ckfinder/userfiles/files/riragoto.pdfIn PDF document text
    • https://landroverbh.com/ckfinder/userfiles/files/1269358302.pdfIn PDF document text
    • https://casadko.fr/userfiles/file/kafolum.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16210bc0b4d62c---32174162048.pdfIn PDF document text
    • http://babijie.com/upload_fck/file/2022-2-16/20220216080214833875.pdfIn PDF document text
    • http://jaluzipro.ru/public/userfiles/file/43383069442.pdfIn PDF document text
    • http://sangiaodichlaocai.com/upload/image/file/zufezinedowipenurunonuni.pdfIn PDF document text
    • https://www.peace4r.com/assets/admin_panel/js/kcfinder/upload/files/vumuxegemofitoxik.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/30092499904.pdfIn PDF document text
    • http://newpacksy.com/admin/kcfinder/upload/files/52268069722.pdfIn PDF document text
    • https://2sisaccount.com/userfiles/files/34546633.pdfIn PDF document text
    • http://dfwsedan.com/nbloom/fckuploads/file/wutukesedajazafasege.pdfIn PDF document text
    • https://botroul.be/uploads/bimubejujazuwov.pdfIn PDF document text
    • http://sergeybazarov.ru/file/31685902232.pdfIn PDF document text
    • https://www.hotel-restaurant-plainfaing.fr/ckfinder/userfiles/files/nofuteduzerajikumosexeno.pdfIn PDF document text
    • https://www.amazoniaon.com.br/assets/js/ckeditor/kcfinder/upload/files/45311333816.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/nmrjagko3uk1bf84heg39hpd4b/luxufoputavewuw.pdfIn PDF document text
    • http://www.itidharamshala.in/images/uploads/files/mitejeseferakidarixiru.pdfIn PDF document text
    • http://brillodesol.com.ar/app/webroot/js/kcfinder/upload/files/gaferewomunobiwagatavok.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/16212ff10a9509---gikimarimabenu.pdfIn PDF document text
    • http://bushurov.ru/images/files/fekawugorogog.pdfIn PDF document text
    • http://solarwindependence.com/ckfinder/userfiles/files/bosexa.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/vitoritesirizujobefok.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/dapotemenak.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/85334128891.pdfIn PDF document text
    • http://sobinco.cz/ckfinder/userfiles/files/sulixupikaxikuxajuso.pdfIn PDF document text
    • http://wcag.powiatgora.pl/userfiles/file/27472412169.pdfIn PDF document text
    • http://goslsl.com/userfiles/file/71969165543.pdfIn PDF document text
    • http://kalecikliyiz.biz/panel/kcfinder/upload/files/lefisiwagemabemerolinabe.pdfIn PDF document text
    • http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/noluzurisilu.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_off00044cb8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00044cb8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44CB8 10660 bytes
SHA-256: 6fa6ab4eae87878a1cb1373c41c0f67c7f96e74c116a8e73aafc2f3dbf922ed1
font_01_sfnt_off0004652c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4652C 16692 bytes
SHA-256: 2809ffc3c5f8d0c854716fdfd22dfd89ebeecf077e00bb3c40c4752c4b461df9
font_02_sfnt_off0004905d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4905D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9