Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c20ad989da2e60…

MALICIOUS

PDF

360.3 KB Created: 2022-03-24 21:34:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-27
MD5: 9447a971e5ea686958d1c30df479cf3f SHA-1: 1170433826652c0d7f8dab3c1ad7d1dc9ab3d491 SHA-256: a9c20ad989da2e604aa1ac9997eae70fd6164d1f6b3e42257256a0a251aaea1d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7397

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://norin.co.za/XSRYdR1H?utm_term=castle+clash+mod+apk+1.+6.+4 PDF link annotation
    • https://sausalito.com/wysiwygfiles/file/didopaxe.pdfIn PDF document text
    • https://ekometal.com/kcfinder/upload/files/79906259264.pdfIn PDF document text
    • http://chroscina.com/userfiles/file/xapas.pdfIn PDF document text
    • https://www.uralhelicom.com/frontend/web/js/kcfinder/upload/files/livireledemelufabe.pdfIn PDF document text
    • http://roseeskin.com/userfiles/file/20220228075449.pdfIn PDF document text
    • http://solarwindependence.com/ckfinder/userfiles/files/14639668019.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/08e46b84778ec30bcd7fcc1df5051f72/67006877931.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/05ff6ec4bb03fac0c6848ec2f889b98f/nital.pdfIn PDF document text
    • http://rztria.ru/kcfinder/upload/files/67634742037.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/feporeko.pdfIn PDF document text
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/dolusulanorejonuvezabi.pdfIn PDF document text
    • http://janeblondsalon.cz/files/upload/files/xewunanodekugaludebu.pdfIn PDF document text
    • https://vajdasaraegyesulet.hu/kcfinder/upload/files/dikojunegomufi.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/37562014652.pdfIn PDF document text
    • http://www.tamar.org.br/fotos_news/files/97752398263.pdfIn PDF document text
    • https://alwaysthesame.pt/site/upload/file/taketemej.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1620d0eb97f139---jitadamumolalibijegad.pdfIn PDF document text
    • https://sabatti.hu/admin/kcfinder/upload/files/latomi.pdfIn PDF document text
    • https://hokusui.co.jp/hsk/wp-content/plugins/ckeditor-for-wordpress/kcfinder/upload/files/rigixonifurobun.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/d60d69f7bf0d7153535433b0bb6b7e30/rexizagofixejukudurufed.pdfIn PDF document text
    • http://rootbeadmill.com/upload_fck/file/2022-3-10/20220310063143373920.pdfIn PDF document text
    • https://rensind.com/upfolder/e/files/20220314043550.pdfIn PDF document text
    • https://angkaganjil.com/contents/files/27942248964.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/b12b10321afee2a28b3d6dac852fde05/17050985780.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16239b7ece7914---86480167629.pdfIn PDF document text
    • https://mysilofr.mysilo.com/upload/ckfinder/files/44749388481.pdfIn PDF document text
    • http://czpohledavky.cz/userfiles/files/befivorimofeliro.pdfIn PDF document text
    • http://denkobarbell.com/_upload/files/53179974921.pdfIn PDF document text
    • http://premo.at/userfiles/file/xodexeleposeti.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1622a0ee9b401b---jufanaritepi.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_off00052efe.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00052efe.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52EFE 19120 bytes
SHA-256: 22f84043deaf35ebc902520126b57bed08352aaac37136edd59f43bd4e84050d
font_01_sfnt_off0005613c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5613C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005785c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5785C 10968 bytes
SHA-256: b65a7befd76ae2a628b75c356ac7c6a01f2be20ffdde06ae8e16378132cbb57a