Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f2b8644b8151c9…

MALICIOUS

PDF

451.9 KB Created: 2022-02-21 02:03:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 61761a23f4a11b11def40f7a94715c9d SHA-1: 4ce8fa895a7c2cba0f60bc360822431ccd3776c8 SHA-256: a4f2b8644b8151c9483220dee7bdf297e7b0122487777c91b222083e15cec260
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5711

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://ragaz.co.za/XSRYdR1H?utm_term=effects+of+air+pollution+pdf PDF link annotation
    • http://rescue119.org/userfiles/file/38970640044.pdfIn PDF document text
    • https://highfieldhousehotel.net/nbloom/fckuploads/file/gufilipijosil.pdfIn PDF document text
    • https://maggies-handmade.com/UserFiles/files/36808075026.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161ba34733e3f3---nufilokilimajatuwama.pdfIn PDF document text
    • https://liad-alger.fr/admin/style/js/edit/kcfinder/..%5Cimages%5Ccontenue/files/ridujerezadezoj.pdfIn PDF document text
    • http://thepokewave.com/uploads/files/34391072034.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee0baad2aee---77004415719.pdfIn PDF document text
    • http://streathamtaxi.com/survey/userfiles/files/fezazejigagosalibozamobon.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/5e6db37cdaddd26a07d4edd6397b71eb/13567948757.pdfIn PDF document text
    • http://arsvet.ru/img/upload/zasojimedijiluworuguzeko.pdfIn PDF document text
    • http://nhatnguyen.vn/media/ftp/file/panuzijo.pdfIn PDF document text
    • http://tktravel.shop/FileData/ckfinder/files/20210721_CC5D6E4C519F82B5.pdfIn PDF document text
    • http://pk.mo/userfiles/file/74496503191.pdfIn PDF document text
    • http://coinproject.com/userfiles/image/file/wokovekosijorelevitosi.pdfIn PDF document text
    • http://top-conversion.ru/ckfinder/userfiles/files/29374516564.pdfIn PDF document text
    • https://panama4d.com/contents/files/76909038328.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/161a6499902919---xegudaramopipexefegetak.pdfIn PDF document text
    • https://sagarexpress.com/userfiles/file/60094603291.pdfIn PDF document text
    • https://autoskola-scp.com/files/lolapad.pdfIn PDF document text
    • http://likuidart.com/files/ckeditor/files/naleferililale.pdfIn PDF document text
    • https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/28649665109.pdfIn PDF document text
    • http://dailyxedayhang.com/userfiles/files/gexererul.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/dofebiti.pdfIn PDF document text
    • http://vinacafe-dalat.com/Images_upload/files/18896303795.pdfIn PDF document text
    • http://hnsunnyfood.com/d/files/jamafular.pdfIn PDF document text
    • https://comfortinnbarrie.com/phpsites/vertical_living/uploads/file/85853504230.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/56495584682.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_off00069f1e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00069f1e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00069f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F1E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006b639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B639 18860 bytes
SHA-256: e3dd3666fdb5c498fd5671d8dca994262fdbad9a07df8337c0989ee53da7f2ab
font_02_sfnt_off0006e817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E817 10696 bytes
SHA-256: 7a74f77382ea32fb5efb1ea9b933f675e22cdca0a532f3c8260be421d98d5d21