Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f7015e11ed44c6…

MALICIOUS

PDF

302.8 KB Created: 2022-03-16 14:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 1c1e2324b1731daa024b5ee8ab68ceb1 SHA-1: 8336b12ae2b5608c940efaacf6f04c781df757e6 SHA-256: a4f7015e11ed44c6bf53b1afd87c66dfcfd7c051e584b5d82233bc1c78c07e8f
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7501

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
  • 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.
  • 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.
  • 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://tevav.co.za/XSRYdR1H?utm_term=logical+test+questions+and+answers+pdf PDF link annotation
    • https://zzwgjx.com/d/files/33273823574.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1620bcb00554dd---42114901403.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/88905322865.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622094dde3915---retenotifivopej.pdfIn PDF document text
    • http://ebd.su/UFD/7623/files/loxanaxizu.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/44833ed4dc387ec1cad381a2b6998c71/tokerotosabe.pdfIn PDF document text
    • http://namaslennikova.ru/kcfinder/upload/files/jolobifo.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/162209683f23b3---rejovanileledivubiba.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/ee6f8c5e2511f056b602654c1c50c915.pdfIn PDF document text
    • http://105chers.netsociality.com/upload/files/zerasagifomowadokuwiro.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/bobaveluwalopevokitigatub.pdfIn PDF document text
    • http://cross-winds.in/upload/contents/images/images/20334379650.pdfIn PDF document text
    • https://nrsa.tj/nrsa_system/ckeditor/kcfinder/upload/files/53110531695.pdfIn PDF document text
    • http://leaders-adv.net/userfiles/file/70425227898.pdfIn PDF document text
    • http://artvideo74.ru/upfiles/files/98534225987.pdfIn PDF document text
    • http://bandodesign.com/assets/ckeditor/kcfinder/upload/files/44915291158.pdfIn PDF document text
    • http://immobilieninvestors.net/userfiles/file/gotumexug.pdfIn PDF document text
    • http://kaoli88.com/upload_fck/file/2022-3-12/20220312042033962786.pdfIn PDF document text
    • http://cnf.toroudshomal.com/admin/upload/files/wesupudoruzoroxinodusu.pdfIn PDF document text
    • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/buvasevagufataxokuj.pdfIn PDF document text
    • https://mosaicopeoplecorporation.com/ckfinder/userfiles/files/82999833205.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/90088756555.pdfIn PDF document text
    • http://holzbau-napetschnig.at/joxivirevamadokewuxozid.pdfIn PDF document text
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/56325008392.pdfIn PDF document text
    • https://hoangvan.vn/wp-content/uploads/files/52211482803.pdfIn PDF document text
    • http://www.sana-anong.com/ckeditor/ckfinder/userfiles2/files/bipixuvaxije.pdfIn PDF document text
    • https://chaletvenay.skidnapping.com/uploadfiles/files/fopizijeteposufonix.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621a208a114ba---66310751866.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/besib.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/f84ae446130feafec1f1fa5ebd6fa122/3990648438.pdfIn PDF document text
    • http://amanetauto.eu/kcfinder/upload/files/bekadaku.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_off00044aca.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00044aca.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44ACA 18564 bytes
SHA-256: a939b4929c480d02c896b2abd0ce8a8d1c8b9d89339471662233363aa3593b3e
font_01_sfnt_off00047b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47B4E 11084 bytes
SHA-256: 92a3a18f0457c210d2cc08c4c8d6a2cbc44ac223b63aec5aaa9ff62b28075aa8
font_02_sfnt_off000494cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494CF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9