Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc9337218fc6c7…

MALICIOUS

PDF

442.3 KB Created: 2022-02-21 06:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 3a6d6267bbcb60411b0e5e6c19c8b448 SHA-1: d3ce52c299a9fe64d3d19ad439cd59fa21f9f9b9 SHA-256: c5dc9337218fc6c753ea34f7b346827ba76d5fc688a64025b02e2987aafaba12
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4571

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://yubit.co.za/XSRYdR1H?utm_term=hr+specialist+job+interview+questions+and+answers PDF link annotation
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e858a8739a9---xuxitalufujogilupuma.pdfIn PDF document text
    • http://wxbeimei.cn/upload/ckimg/files/202111220457164059.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8c1711b3f0---59415888983.pdfIn PDF document text
    • http://mbfeed.vn/upload/files/zusidadekef.pdfIn PDF document text
    • https://ptkas.com/kingkong/userfiles/files/44221695938.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161a19b2b6894f---tikubozokenaxovekimevop.pdfIn PDF document text
    • http://smartbazar.online/app/webroot/upload/files/43307103180.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/filifux.pdfIn PDF document text
    • https://rjpexport.com/files/98933005934.pdfIn PDF document text
    • https://vnmmalta.com/userfiles/file/225820081.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/lopimaram.pdfIn PDF document text
    • http://kolesnikov.pro/ckfinder/userfiles/files/gigejizugesajamajif.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/86602997146.pdfIn PDF document text
    • https://gemma.lucien-sv.info/uploads/files/61e43e4dd680f.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/nigovopitama.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/manuwutanijisowewefozed.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/jorazufav.pdfIn PDF document text
    • https://mdteam.se/ckfinder/userfiles/files/8515888638.pdfIn PDF document text
    • https://ximangcampha.vn/upload/files/tipedebugepuraxemubafow.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/safasojowuzoxadotikoweze.pdfIn PDF document text
    • https://www.drukwerkmax.nl/public/admin/assets/global/plugins/kcfinder/upload/files/75043193004.pdfIn PDF document text
    • http://mail-business.ru/uploads/file/xomizivasow.pdfIn PDF document text
    • http://utpcomp.ru/uploads/files/rufowu.pdfIn PDF document text
    • https://diphong.com/uploads/vojupiduzisigobetuje.pdfIn PDF document text
    • https://saunadlaciebie.pl/userfiles/file/94304102914.pdfIn PDF document text
    • https://digireg.lu/upload/63279565843.pdfIn PDF document text
    • http://sor1310.com/userfiles/file/xexukuwozuxetab.pdfIn PDF document text
    • http://arredamentoambienti.it/img/file/felakufu.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161b98c56ea3d3---65631405604.pdfIn PDF document text
    • http://qianshunqs.com/admin/upload/vezuka.pdfIn PDF document text
    • http://markone-tools.com/upload/files/wovimewubifow.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/qqqlr4ub85uerudpbk20pnhh8s/worituzitaku.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/18794167863.pdfIn PDF document text
    • https://www.tailormadeholidayspt.com/kcfinder/upload/files/boxulixanepafedoburuvexew.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/0ec2273558f8660f6c5f14f05a1d601c/zufamafagekuw.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00066434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66434 17464 bytes
SHA-256: 0e956ccba5faf1f349eeb736295d41de7d696192b8bb0995f56542e49d18fb9f
font_01_sfnt_off00069175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69175 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_02_sfnt_off0006a778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A778 11164 bytes
SHA-256: 02610caaeefa2d99f9517357be259d1e2243e5b26451ebb4f310e72fa0200b78
font_03_sfnt_off0006c137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C137 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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