Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b2d57842b9401e…

MALICIOUS

PDF

250.9 KB Created: 2022-02-07 13:53:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: a93c11af34cf038fbe319c2090a3188d SHA-1: 90bbdc0c213793f5526d4da34f1fedd01f5ffa2a SHA-256: a8b2d57842b9401e0bfd2022a4b62c137b5195e9df44b287e4aeffc3757e21d3
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7629

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
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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 http://vinhthuan.asia/upload/files/riloneredubakaxazose.pdf In PDF document text
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/wibopikigolitoxemolem.pdfIn PDF document text
    • http://nepaldristi.com/dbros/public/ckeditor/kcfinder/upload/files/mufevodamovaxufa.pdfIn PDF document text
    • http://xn--b1adadl3aoabascoo.xn--p1ai/upload/files/sulig.pdfIn PDF document text
    • https://ziyang100.com/userfiles/file/art_16331581043281.pdfIn PDF document text
    • http://kronospan-mofa-hungary.hu/editor_up/dadimufepavenewofi.pdfIn PDF document text
    • http://melody-house.ru/kcfinder/upload/files/91870606768.pdfIn PDF document text
    • https://dm288.rs/slicice/file/zikapawomabowojawep.pdfIn PDF document text
    • http://katachizu.com/img/news/files/87207669104.pdfIn PDF document text
    • http://solmoda.it/userfiles/files/pavalujumobufuzowiliri.pdfIn PDF document text
    • http://studiocalcinoni.com/userfiles/files/dositesazar.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/rohc195gkp3nhohe1dlj0o5lke/fovemiku.pdfIn PDF document text
    • https://www.hkfew.org.hk/ckfinder/userfiles/files/6319269862.pdfIn PDF document text
    • https://edouardweil.com/userfiles/file/sokomodajiwalijura.pdfIn PDF document text
    • http://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/50745085668.pdfIn PDF document text
    • http://nanopena.cz/upload/file/wivelepamasivoxam.pdfIn PDF document text
    • http://goldenteriyaki.com/uploads/files/44655752063.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3d8969a49---90515378690.pdfIn PDF document text
    • http://win-sonic.com/ck_imgs/files/36803116158.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/nemotufeputakemowuw.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/wunarilusi.pdfIn PDF document text
    • https://autohausnschmidt.de/userfiles/file/wivogutubigonasutes.pdfIn PDF document text
    • http://jtravel.clickis.kr/FileData/ckfinder/files/20211128_0B5B1F39903579D1.pdfIn PDF document text
    • http://www.eintracht-bayreuth.de/kcfinder/upload/files/17925939407.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/50791259287.pdfIn PDF document text
    • https://thic.muki001.com/plugin/ce1/ckfinder/userfiles/files/xajejozizedoniwirofolero.pdfIn PDF document text
    • http://imhkayseri.com/resimler/files/35467294122.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/fatenufazuf.pdfIn PDF document text
    • http://vtaky.sk/media/file/99249035611.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16193751439a3c---xeruvanarotulun.pdfIn PDF document text
    • http://umpn.pnl.ac.id/asset/kcfinder/upload/files/45408788320.pdfIn PDF document text
    • https://kvkumariajnkvv.org/singhania/downloads/file/mugag.pdfIn PDF document text
    • http://nazycakes.com/userfiles/file/11439519055.pdfIn PDF document text
    • http://badgerhillfarm.uk/zajosibowatinanofukifana.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=job+interview+powerpoint+presentation+templatesPDF link annotation
    • http://jtravel.clickIn 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_off00037ece.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00037ece.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37ECE 17412 bytes
SHA-256: 3b3b0fe537e3b742761635cd8d0b9cb55d07b9110fa395f6cd593fda8969dfce
font_01_sfnt_off0003ac31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AC31 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003c351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C351 10696 bytes
SHA-256: c256db79b851be8a14cbfd1b2af91869867f9ea7938b28d2dc7eeee68ce1ff2b