Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a79ac4694c699c…

MALICIOUS

PDF

516.0 KB Created: 2022-02-09 03:43:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-10
MD5: 6d2fe55db02dcb8164146df5ced2f417 SHA-1: f606280f262294545fb8a38eccaeb1457d96d42f SHA-256: 18a79ac4694c699cd40118ca743f7c567ece2a725cc7257aa1819a4b971faf17
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4445

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://sunuf.co.za/XSRYdR1H?utm_term=present+perfect+continuous+tense+exercise+with+answers PDF link annotation
    • http://www.parinet.fi/tiedostot/files/22131094186.pdfIn PDF document text
    • http://klimafertotlenites.hu/kcfinder/upload/files/86704011940.pdfIn PDF document text
    • http://rm-centr.ru/uploads/file/guwuwesefuzomizowu.pdfIn PDF document text
    • https://hattshopping.com/admin/assets/images/ckfiles/nufibudipatizesatefalim.pdfIn PDF document text
    • http://webhoctot.com/app/webroot/uploads/files/84829645134.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/pukazoxogufefebikazel.pdfIn PDF document text
    • http://tele-klass.ru/i/upload/files/14379405127.pdfIn PDF document text
    • http://kelkenaghshband.com/app/webroot/img/files/70765931586.pdfIn PDF document text
    • https://perfecthospital.net/FCKeditor/file/tanudasogu.pdfIn PDF document text
    • http://www.santabriganti.org/admin/ckfinder/userfiles/files/19522312484.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/rgrfuq8d6if7gl7ci74qmehhmq/59827983032.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/b33bec0aa4592422945955301b839da2/37499637061.pdfIn PDF document text
    • https://widepolymers.com/userfiles/file/japavas.pdfIn PDF document text
    • https://ngenadmin2.nextgenphotosolutions-beta.com/app/webroot/files/file/86220651784.pdfIn PDF document text
    • http://pune-india.info/userfiles/file/kisamokezapuguwonozu.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/64207262345.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/3ddd2286311931eb3fa6576f300dc5f8/457910455.pdfIn PDF document text
    • http://cmtdental.com/upload/ckimg/files/setikozepefovarogavidib.pdfIn PDF document text
    • https://rhuyscampingcar.fr/images/files/lejigoketotodut.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/61756054994.pdfIn PDF document text
    • http://systempro.kr/userData/board/file/watarafasozizuguwoveju.pdfIn PDF document text
    • http://wills-machine.com/UploadFile/file/3124045257.pdfIn PDF document text
    • http://silver1979.com/upload/file/mopen.pdfIn PDF document text
    • http://eviljoy.com/UserFiles/File/44658145891.pdfIn PDF document text
    • http://vektor-bezpeki.com/userfiles/files/50092359892.pdfIn PDF document text
    • http://sinosteelcode.com/filespath/files/20220119051215.pdfIn PDF document text
    • https://z87992961.com/upload/files/20220206015803.pdfIn PDF document text
    • http://bdn10.cz/files/file/85865155006.pdfIn PDF document text
    • http://sjmhospital.org/files/js/ckfinder/userfiles/files/wekupazaseroganapukivigef.pdfIn PDF document text
    • http://dycelife.com/userfiles/file/83356732525.pdfIn PDF document text
    • http://jaatkinson.com/userimages/51686181623.pdfIn PDF document text
    • https://harrodsrentacar.com/public_html/userfiles/file/46697580971.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_off0007a19d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007a19d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007a19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A19D 17664 bytes
SHA-256: 6dd94052f8e4671e83b213f946168a1d26e887a219f19b471a6aab8b0caaf91d
font_01_sfnt_off0007cf6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF6A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0007e68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E68A 10820 bytes
SHA-256: 26ce7ce5b57a7fc983a02cf6e1015c9960ea7099004cf9722ee12607d7f11e37