Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ad16fc81f6ee03…

MALICIOUS

PDF

420.8 KB Created: 2022-02-08 05:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-10
MD5: 40098dbecbaefd1de9df2c98d044bb2a SHA-1: 39ea5aee75cfc728ab86425322ca945e8705d09a SHA-256: 18ad16fc81f6ee03d80b6dc31a09fcb0b423300e14cf48c8ff8ddafb477ffd6d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

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 http://www.rhkapadia.org/Admin/plugins/kcfinder/upload/files/lapide.pdf In PDF document text
    • http://tomei4x4.jp/js/upload/files/92796064511.pdfIn PDF document text
    • http://gospelpour100voix.com/fichiers/newsletter/file/21336402380.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///74772617992.pdfIn PDF document text
    • http://candemdientu.com/Images_upload/files/74891222612.pdfIn PDF document text
    • http://kieryk.pl/img/userfiles/file/43052761854.pdfIn PDF document text
    • https://myphambambi.com/webroot/img/files/fojulusodipiz.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/fitome.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/c5ad0db76dd3db4ac1636967616fa362/81735096987.pdfIn PDF document text
    • http://lovelyspa.net/ckfinder/userfiles/files/71992687810.pdfIn PDF document text
    • http://foodchemsino.com/d/files/mikusurisi.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2021091814501173499.pdfIn PDF document text
    • http://greenmodels.ru/uploads/files/98555887309.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/dozefarafutulaso.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/39942965900.pdfIn PDF document text
    • https://smaransaving.com.np/ckfinder/userfiles/files/53343186213.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/9u57omvhdmh5ngsig4hvpfph3p/17430383325.pdfIn PDF document text
    • https://tomorrowhubs.com/upload/users/files/77448239949.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d4e21401d15---82338881893.pdfIn PDF document text
    • http://hotelparkplaza.in/app/webroot/js/kcfinder/upload/files/kuwumuzezujegizewefenekav.pdfIn PDF document text
    • https://sergiomauri.com/images/file/binutolomedizuxus.pdfIn PDF document text
    • https://33mobility.net/uploads/files/75579276607.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-9-26/20210926171011375520.pdfIn PDF document text
    • http://pspectr.ru/userfiles/file/kibapetixenikiselevimi.pdfIn PDF document text
    • http://simkoongschool.com/uploads/editer/files/46588347087.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1617181a7d6d17---wapupixalobejisusaw.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138eac665610---79788677446.pdfIn PDF document text
    • https://imihwa.com/uploads/image/20210819/files/20210819061814.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/161965cf10adf5---zelopu.pdfIn PDF document text
    • http://vantaidongsaigon.com/uploads/files/9379681313.pdfIn PDF document text
    • https://tevav.co.za/XSRYdR1H?utm_term=sea+of+thieves+pc++gratisPDF link annotation
    • 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_off000626d9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000626d9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000626d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D9 10752 bytes
SHA-256: 1b8ff95e752d6ad8fe2b236243c568205c0b47f2a994884a03a4bcf62f0f9b3e
font_01_sfnt_off00063fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC0 17264 bytes
SHA-256: 5c0d0f335550738d959d1c0605342c93a89c1c9034eea95e348b60503a01445e
font_02_sfnt_off00066ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CA0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9