Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6e3577378c9317…

MALICIOUS

PDF

430.9 KB Created: 2022-03-28 11:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: f2209b8aa912e1cb38322348c9e7074c SHA-1: 4c1f7e5dada0e278dcf207fb571818602fcaf152 SHA-256: 8f6e3577378c9317e6bb66d50bec36df4f7fb60fc96ab59c6817695e75797199
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sunuf.co.za/XSRYdR1H?utm_term=curso+de+electricidad+pdf PDF link annotation
    • http://dentistturkey.com/image/files/solurezuvewovalatulafifid.pdfIn PDF document text
    • http://sjzhtchem.com/upload/files/41245673188.pdfIn PDF document text
    • http://bkht.vn/userfiles/file/89007706083.pdfIn PDF document text
    • https://www.beltiar.by/css/assets/plugins/kcfinder/upload/files/11100484557.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/xoxesetu.pdfIn PDF document text
    • https://msiutilities.net/documents/94145288970.pdfIn PDF document text
    • http://fastbeatbattlerider.saint-fun.com/assets/upload/files/50972811173.pdfIn PDF document text
    • https://tradingphrases.com/userfiles/files/ledevusopalutofiw.pdfIn PDF document text
    • http://maginsaatmetal.com/resimlerfiles/34228648140.pdfIn PDF document text
    • https://xn--80ab4bebq2d.xn--p1ai/upload/files/juvixurusesov.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/162343952c9da1---69848862102.pdfIn PDF document text
    • http://szpk.hu/_user/file/xuzusonumikubojuvo.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/019cfa3cc58b1ebe359c07832ee0ac75/wigufanevuzoxep.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/werasafawiditifobevino.pdfIn PDF document text
    • https://sreekanakananda.com/ckfinder/userfiles/files/fituduzifotozonise.pdfIn PDF document text
    • http://klhb365.com/userfiles/file/art_16471385011759.pdfIn PDF document text
    • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/74286579208.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/162101a586baee---tawefuwu.pdfIn PDF document text
    • http://billsky.ee/files/file/weponawikovekutelogopesid.pdfIn PDF document text
    • http://concienciafiscal.com/kcfinder/upload/files/85316304483.pdfIn PDF document text
    • http://7serve.org/userfiles/file/20220318094521.pdfIn PDF document text
    • https://coherence.cz/userfiles/file/13512333451.pdfIn PDF document text
    • http://inkubatorhaz.lenti.hu/feltoltes/files/gedex.pdfIn PDF document text
    • http://brbud.pl/userfiles/file/92083234469.pdfIn PDF document text
    • http://www.regional4.org.ar/administrador/kcfinder/upload/files/67562237810.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/texejume.pdfIn PDF document text
    • http://www.la-rocca.pl/app/webroot/files/files/53322088190.pdfIn PDF document text
    • http://mercuresamuichaweng.com/admin/file/tepasoginu.pdfIn PDF document text
    • https://xyoaa.org/sites/default/files/files/17539804647.pdfIn PDF document text
    • http://rivebistro.net/ckfinder/userfiles/files/85934018469.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_off000648d4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000648d4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000648d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648D4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00065ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FF4 10640 bytes
SHA-256: 085c0b28cc86d85e4797b55252298a522699daea3baedd07214535b4006e614c
font_02_sfnt_off00067875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67875 20388 bytes
SHA-256: 4b6e22fd8021e4cb1969e25c6a963cb4494c0a4d584072beea9e49a8492a05f3