Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8711f28f47fdc2d…

MALICIOUS

PDF

317.6 KB Created: 2022-02-13 23:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: b650882b09482c13db276a1323dc199d SHA-1: 8c6616aab6103bc51741644b26b12ed0f71b9901 SHA-256: f8711f28f47fdc2dde4527562093bcb51b107ad654cbf1b5c4b02c56a296c171
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7494

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=idsa+hiv+treatment+guidelines PDF link annotation
    • http://wernitznigg.at/files/13854893556.pdfIn PDF document text
    • http://em-mould.com/ckfinder/userfiles/files/segabot.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/ripuwuda.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/golosesirow.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/q4j8hetcroai7o5s2ltsv6ephs/9926009889.pdfIn PDF document text
    • http://vagon.biz/files/file/71686715689.pdfIn PDF document text
    • https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/3822911727.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/95318897596.pdfIn PDF document text
    • http://pngroup.pl/ckfinder/userfiles/files/vezirazaxedogakimipe.pdfIn PDF document text
    • http://cravaluos.com/ckfinder/userfiles/files/97653080797.pdfIn PDF document text
    • https://goodmix-psc.com/userfiles/files/xigozejugojipevoriveban.pdfIn PDF document text
    • http://zetrade.cz/userfiles/file/wuxomagotegobuletazesaxi.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ae06d7e3610---tugusor.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/1d2933e2081b31b60de793d13f0b8397/tefab.pdfIn PDF document text
    • https://avphunter.ro/ckfinder/userfiles/files/kivadasabewojolosanak.pdfIn PDF document text
    • http://inistor.com/ufiles/files/47849074273.pdfIn PDF document text
    • https://stpeterscbs.ca/ckfinder/userfiles/files/92294688241.pdfIn PDF document text
    • https://centaur.vri.cz/docs/files/xusow.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__613DCE6868EB4.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618dd6162d139---27177020397.pdfIn PDF document text
    • https://insolite.lu/img/userfiles/files/wukaja.pdfIn PDF document text
    • https://brawlcall.jordanadams.com/ckfinder/userfiles/files/87173651284.pdfIn PDF document text
    • http://ilsungwarehouse.com/userData/ebizro_board/file/27610292811.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/24610196639.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138ceef07b5c---zebuganazop.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ac2ed1418a8---mumejeje.pdfIn PDF document text
    • http://geerhannutpourreussir.be/docs/upload/files/rexipazefe.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_off000488df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x488DF 10692 bytes
SHA-256: 5362dcbcb889603429caa36ba0e1c050320e4b173e82b92de28b6913c5bd0ac8
font_01_sfnt_off0004a0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0FA 18088 bytes
SHA-256: 305c6b27261c04502a76a7f4fbacba9459de7485215305d194baadb3988308dd
font_02_sfnt_off0004cfb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFB1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9