Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa804403a729cb3b…

MALICIOUS

PDF

324.6 KB Created: 2022-02-08 01:24:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 0677ed9480a06835dacf6aeff848a097 SHA-1: 8da92656d37337f159ee6f0f0049e54dee982ad1 SHA-256: aa804403a729cb3bbe29835103a19f8c6f38b95ffbe068107d2a40bc919ad13b
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6397

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
  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=vidmate+for++free PDF link annotation
    • https://wegofa.com/userfiles/file/redazararanatukedekifim.pdfIn PDF document text
    • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/86287300825.pdfIn PDF document text
    • http://udelimpa.es/ckfinder/userfiles/files/26014464860.pdfIn PDF document text
    • https://grup-insaat.com/userfiles/file/devesegeraw.pdfIn PDF document text
    • http://gotween.com/userfiles/file///68252150978.pdfIn PDF document text
    • http://studiocalderini.it/userfiles/files/93516618762.pdfIn PDF document text
    • http://tieuhocsondong.hoaiduc.edu.vn/ckfinder/userfiles/files/nited.pdfIn PDF document text
    • https://777mto.com/contents/files/rodekekitufexaxoxali.pdfIn PDF document text
    • http://getem.eu/files/file/xozipakuzusijoxarowep.pdfIn PDF document text
    • http://biogenetec.tw/image/files/20220102_162939.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/popusekimuvut.pdfIn PDF document text
    • http://proallprint.com/userfiles/files/borirurifipujasuroz.pdfIn PDF document text
    • http://temdientu.vn/images/ckeditor/files/5328564598.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/31960199115.pdfIn PDF document text
    • http://sov.tranovice.org/webpagebuilder/ckfinder/userfiles/files/69023395400.pdfIn PDF document text
    • https://fullgame.hu/uploads/files/50291421827.pdfIn PDF document text
    • http://montpellier-businessplan.com/mbp/upload/images/images/upload/ckfinder/12740310274.pdfIn PDF document text
    • http://kowalstwwo.pl/public/cms/images/file/jasujekanuxedigula.pdfIn PDF document text
    • http://architettobotteonpierpaolostudioabacus.it/userfiles/files/90264091430.pdfIn PDF document text
    • http://metaphorcreators.com/kcfinder/upload/files/74452185903.pdfIn PDF document text
    • http://tydafa.com/dafa/uploadfiles/20210923073732.pdfIn PDF document text
    • http://potolokomsk.ru/ckeditor/kcfinder/upload/files/66699838416.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///dexolagajimosapot.pdfIn PDF document text
    • http://astmasme.com/userData/board/file/93657743929.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161eae3f813f69---48363540481.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/4eaaf7d11169a3bb4950212ee12e4aa9/54033171605.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/63c9346fffe3b8b92a85e7430a260f89/96555269467.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/10a92c7ad078d73645b7f3618ef93e59/wipabuzupaj.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/gfg3ugqp48g797u6h438gdffmk/tefotikekixowozejafobam.pdfIn PDF document text
    • http://visoda.lt/ckfinder/userfiles/files/40269889099.pdfIn PDF document text
    • http://ypperfect.com/ckfinder/userfiles/files/83062563971.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210725071449.pdfIn PDF document text
    • https://onlinendttraining.com/files/18725760309.pdfIn PDF document text
    • https://clubselect.ro/ckfinder/userfiles/files/25395457696.pdfIn PDF document text
    • http://mexvp.com/ckfinder/userfiles/files/nelazipo.pdfIn PDF document text
    • https://bor-diing.com/upload/files/nevisazolog.pdfIn PDF document text
    • http://www.alite.com.br/assets/kcfinder/upload/files/vimiloxemowozumunulewo.pdfIn PDF document text
    • http://jerseysolarenergysystems.com/userfiles/file/40690993545.pdfIn PDF document text
    • http://fkm-lux.by/var/upload/file/19000273192.pdfIn PDF document text
    • http://dc-42351dc5a6b3.prshots.es/uploads/userfiles/1628966730/files/xilutepasaw.pdfIn PDF document text
    • https://kaptenhoki.info/contents/files/70728399879.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/161a40916af7fa---26224857804.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/gukolusonulibinomira.pdfIn PDF document text
    • http://sadiqandsons.com/userfiles/files/58122071368.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/6949910236.pdfIn PDF document text
    • http://yugang360.com/upload_fck/file/2021-10-18/20211018185247108397.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
    +5 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004a6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6F9 17508 bytes
SHA-256: 5a7f9ae8b07439d6c75758baddc280ee86b4a0229bbf44c5d611c96e19df5716
font_01_sfnt_off0004d48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D48F 10168 bytes
SHA-256: f991012b4c45f962d1a11899ddd9572bd4d20da4aa4189c8068bb9eb26116ff9
font_02_sfnt_off0004eb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB50 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9