Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f63d16198e9539c…

MALICIOUS

PDF

261.9 KB Created: 2022-03-17 12:01:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 9f0da4aec43a5ae9fb1fd707bf92858b SHA-1: bad81f45a922884f53bf4293a25689b1d683d636 SHA-256: 8f63d16198e9539c5af1f1e70e25bc4ae8c7f5476bae7cbee691c4cd63aa4b21
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

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 http://modulobase.com/userfiles/file/84342102394.pdf In PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16226c5d77d6d3---fejivojiduzamiwawafiv.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/95411798909.pdfIn PDF document text
    • https://whitepalacegrill.com/userfiles/madigupubevirin.pdfIn PDF document text
    • https://areopag.ru/sites/default/files/uploads/lizulas.pdfIn PDF document text
    • http://stmrcstvm.com/userfiles/file/46745124326.pdfIn PDF document text
    • https://inprovitcentroamerica.com/ckfinder/userfiles/files/31316241777.pdfIn PDF document text
    • http://aspbae.org/userfiles/file/fowupojibobunamosafimu.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1620a40fb42073---womudikakuniwodeguragebu.pdfIn PDF document text
    • https://banderlogclub.ru/Files/file/mugozamonevopetujaviw.pdfIn PDF document text
    • http://www.pratikchoudhury.com/fckimages/file/57191194727.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/podonisamunexedetojabe.pdfIn PDF document text
    • http://atoutslegion.com/userfiles/file/zawufed.pdfIn PDF document text
    • http://vp-concept.ch/app/webroot/kcfinder/upload/files/13206900340.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fc96b7061e1---18579621825.pdfIn PDF document text
    • https://raovat72.vn/uploads/news_file/nonanevewinaw.pdfIn PDF document text
    • http://k12kos.com/ckfinder/userfiles/files/zoruzel.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/pijesiw.pdfIn PDF document text
    • https://toppelletmachine.com/d/files/31558215433.pdfIn PDF document text
    • https://profitaler.com/UserFiles/file/3396482107.pdfIn PDF document text
    • https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/lapabonad.pdfIn PDF document text
    • https://pyreneesjogja.com/kcfinder/upload/files/zexini.pdfIn PDF document text
    • http://divorceinhungary.hu/kcfinder/upload/files/59683488190.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/zalalezize.pdfIn PDF document text
    • https://krishnapumps.com/userfiles/file/71186323680.pdfIn PDF document text
    • https://larioenergy.net/uploads/file/2002995800.pdfIn PDF document text
    • https://www.fcefrance.com/kcfinder/upload/files/joliwevenobo.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16219b4c810478---jomokabaralogujaxod.pdfIn PDF document text
    • http://top1np.com/ckfinder/userfiles/files/sutelewixapado.pdfIn PDF document text
    • http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/46638702149.pdfIn PDF document text
    • http://alatasfilms.gr/ILC/img/file/87090722599.pdfIn PDF document text
    • http://kiddeefire.com/media/userfiles/files/41293557542.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/24558604110.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=automatic+call+recorder+for+android+9PDF link annotation
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1621b67b85f9a4---76666012712.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_off0003a8fe.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003a8fe.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003a8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A8FE 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003c019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C019 17952 bytes
SHA-256: 62d3f965deeb06bbcf66845cea8b7e2c8a4eb2254b635a8e0ff530f3d666da7b
font_02_sfnt_off0003eef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EEF7 10716 bytes
SHA-256: 6f4521f235cf1322536f35007ba8f739872ead7cd0c68abebb449109f9fd33bf