Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af82e6afdc6c4f9…

MALICIOUS

PDF

560.8 KB Created: 2022-02-28 21:53:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dbd3b8f43b8ec8fd597ae043b4c251e1 SHA-1: 3f459853a4a4b2bda9a93203f4e9cf214b6079f0 SHA-256: 4af82e6afdc6c4f975f725d22a67a8aaea77497e2b74135e9f7ae33bc034959e
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4243

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podar.co.za/XSRYdR1H?utm_term=chlamydia+causes+pdf PDF link annotation
    • https://binhvi.com/upload/files/97551646161.pdfIn PDF document text
    • http://yeke.com.tr/public/kcfinder/upload/files/xibapugakikulobikas.pdfIn PDF document text
    • http://starcity-vinhomes.vn/app/webroot/img/files/96707366909.pdfIn PDF document text
    • http://tylincms.com/userfiles/files/45045305283.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1620386685fc53---defifafisaxezizaxupal.pdfIn PDF document text
    • https://fullgame.hu/uploads/files/86325927931.pdfIn PDF document text
    • http://iscyber.com/userfiles/file/43624622592.pdfIn PDF document text
    • http://ccshecea.org/upload/files/34546290819.pdfIn PDF document text
    • http://www.romdom.pl/public/js/kcfinder/upload/files/91930808057.pdfIn PDF document text
    • https://derya.afmiletisimajansi.info/resimler/files/98362545926.pdfIn PDF document text
    • https://fac.apuntoweb.com/userfiles/files/fovudidu.pdfIn PDF document text
    • http://gr-chem.com/upload/files/dupove.pdfIn PDF document text
    • https://kingsnews.org/app/webroot/js/image/files/42650424481.pdfIn PDF document text
    • https://coprose.com.mx/kcfinder/upload/files/22496287170.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/10207032308.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/161ff9262efc74---pezepilobelenon.pdfIn PDF document text
    • https://liho.cz/UserFiles/File/xigusuwokewapigamosedane.pdfIn PDF document text
    • http://luchetti.it/userfiles/files/27361071386.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/76728070806.pdfIn PDF document text
    • http://designbyjoseph.com/uploads/File/76207749849.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/vifuwufob.pdfIn PDF document text
    • https://dodatnagarancija.com/userfiles/file/85295609021.pdfIn PDF document text
    • http://andreevka.topmebli.com/content/xuploadimages/file/sojitixununiseso.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/73539932402.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/50202980328.pdfIn PDF document text
    • http://printways.filtronro.com/pa/trainstation/uploads/image/file/10783860829.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/162185fccf23aa---83589596348.pdfIn PDF document text
    • https://expobar.vn/app/webroot/files/images/pages/files/tozidibiponufegazer.pdfIn PDF document text
    • http://admin.accf-asean-china.com/assets/grocery_crud/texteditor/kcfinder/upload/images/files/dikeven.pdfIn PDF document text
    • http://cornaredo.gattinonimondodivacanze.it/themes/userfiles/files/29304298408.pdfIn PDF document text
    • http://ucg-eg.com/userfiles/file/86533200039.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/58676294710.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/lerowugebafej.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/wewofutugara.pdfIn PDF document text
    • http://eprl.korinthos.uop.gr/openwebquest/ckeditor/kcfinder/UPLOAD/files/42386496587.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_off00085221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85221 10708 bytes
SHA-256: 557eae1102d2d56a77a08ad1ecd415b667fb708da2992b9785a4769315d3e854
font_01_sfnt_off00086ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AB4 18784 bytes
SHA-256: cac9dc9146dd0f372c603e483c007daf074690cee0dac027d3c238e0b1a0c809
font_02_sfnt_off00089c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C41 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9