Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5da18f32e3f4ea1…

MALICIOUS

PDF

230.3 KB Created: 2022-03-18 16:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: c0d07920aa958c54b811d3f40afdfe13 SHA-1: 6a3bb6ad88e9077a551a3d6ff9f7eddc081b514f SHA-256: b5da18f32e3f4ea1070e6087b32d092eb310abd329ea38aea403faa6abb3cd5b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8135

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://yubit.co.za/XSRYdR1H?utm_term=windows+media+player+lite+free PDF link annotation
    • http://glavis.biz/userfiles/file/96421989464.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16218025b3d4a9---10514082106.pdfIn PDF document text
    • http://ardennes.proximeo.com/ckfinder/userfiles/files/33887693882.pdfIn PDF document text
    • http://gibisch.com/files/files/rawapemowinubokokisonibeb.pdfIn PDF document text
    • http://ecogestval.es/userfiles/file/lobiwapigamazubajadoji.pdfIn PDF document text
    • https://caviar.md/kcfinder/upload/files/mawafodusuko.pdfIn PDF document text
    • http://cokhivietuc.webthoidai.com/img-vietuc/files/fitifipuwig.pdfIn PDF document text
    • http://rendszerguru.hu/admin/kcfinder/upload/files/87415335850.pdfIn PDF document text
    • http://wellcomm.co.id/assets/kcfinder/upload/files/32777257032.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16233691020b1d---39406798550.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/fazasoxafukarowiv.pdfIn PDF document text
    • http://yule-sign.com/upload/editor/file/20220201235923.pdfIn PDF document text
    • https://unityofmyanmar.org/images/files/38536385411.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/80517729989.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/296c770d8a46a3a9d7504d668795b764/xikuluxalujukajosuge.pdfIn PDF document text
    • http://preiswerte-unterkunft-papenburg.de/mediapool/19678385485.pdfIn PDF document text
    • https://wonwon.taipei/photo/file/lavipek.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16207614af3064---35756189646.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/gixixusojotomutenajuraxi.pdfIn PDF document text
    • http://schneider-glossa.ru/kcfinder/upload/files/repik.pdfIn PDF document text
    • http://apartamentgizycko.pl/files/file/rojefaripubazofasiziv.pdfIn PDF document text
    • http://thibangoto.com/app/webroot/uploads/files/27254025855.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/18865142379.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/fugovasu.pdfIn PDF document text
    • https://a1frftp.a1-recruitment.ro/v2011/Files/fck_upload/file/75867551380.pdfIn PDF document text
    • http://krokodilok.hu/_user/file/89796790513.pdfIn PDF document text
    • http://industrialsupplies.pk/userfiles/files/lomitudofomamib.pdfIn PDF document text
    • https://inijariku.com/ckfinder/userfiles/files/83239421291.pdfIn PDF document text
    • https://www.ttmagazin.com/assets/admin/js/plugins/kcfinder/upload/files/65926211941.pdfIn PDF document text
    • https://thefashion.asia/admin/kcfinder/upload/files/bunavizujagapuzijuvararoj.pdfIn PDF document text
    • https://ceb.lk/assets/js/kcfinder/upload/files/pirefibodegezonikoxaw.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_off00032b0c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00032b0c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00032b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B0C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003422c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3422C 10852 bytes
SHA-256: b2c1544a63a78005d7af11fbd0238e2ebe01edbef4ba6b8a70ccd29b84accad6
font_02_sfnt_off00035b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35B43 17908 bytes
SHA-256: 4804fe4437afb523aae275bc2484ab37c27a57c9076daa906bb0f80a9484e125