Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b7591d62092ffc…

MALICIOUS

PDF

244.3 KB Created: 2022-02-14 09:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 9427c45fe76510e57d9caa2575830518 SHA-1: a67ea881e0aab47461f348225b26c0af0880d05f SHA-256: a8b7591d62092ffcc42911930aa5d71bd1e2f89efa08d2a4dcb228eab73e5d22
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8277

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
  • 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.
  • 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://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/b7rebu7cuh1n13hpeapnpgpt54/67282223090.pdf In PDF document text
    • https://marblo.com/app/webroot/img/files/nijamidupozemed.pdfIn PDF document text
    • http://www.poliklinika-hb.cz/userfiles/file/wususovivefufapisapagemo.pdfIn PDF document text
    • http://mirutte.com/newsfiles/files/nujuzoxix.pdfIn PDF document text
    • http://honda-vo.com/upload/file/57763234680.pdfIn PDF document text
    • http://trunghungplastic.com/luutru/files/bupopapililigozutizi.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb710382001---6653256434.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161cd96b336529---64660175796.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/89312075862.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/161596ec78448b---vanisuraxexowotaz.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/amejeri.pdfIn PDF document text
    • http://gruppocinofilomarsalese.com/userfiles/files/buxumamuperarilinexofosuz.pdfIn PDF document text
    • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/kufekulap.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210804051657118518wpo4y0.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1612152c5b6a69---49213378873.pdfIn PDF document text
    • http://stigstudiotecnico.it/userfiles/files/wadojinikowebawam.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f5a0a56c15---59235889102.pdfIn PDF document text
    • https://frezcentrum.hu/kcfinder/upload/files/rowuledinubab.pdfIn PDF document text
    • http://arenabilardo.com/data/_files/43105708964.pdfIn PDF document text
    • http://pescepiana.eu/userfiles/files/letavubolapenukutapefa.pdfIn PDF document text
    • http://shmgec.com/Uploadfiles/files/notojinafegotuputifokemu.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c39fdb248e---65203279162.pdfIn PDF document text
    • http://hophungvietnam.com/app/webroot/uploads/files/zepipeweka.pdfIn PDF document text
    • https://indiansabroad.uk/userfiles/file/75133086822.pdfIn PDF document text
    • http://investmedic.com/app/webroot/assets/js/kcfinder/upload/files/83490902015.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/dakajona.pdfIn PDF document text
    • http://perfekt-dom.pl/designhome/admin/userfiles/file/nosesofuvafuvavije.pdfIn PDF document text
    • http://thekkadyinfo.com/userfiles/file/33377139652.pdfIn PDF document text
    • https://mkserwis.pl/userfiles/file/93281001571.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161f9cca892747---rolisixigolawip.pdfIn PDF document text
    • http://0932018255.kad.tw/kads/ckfinder/userfiles/files/86983023310.pdfIn PDF document text
    • https://www.gico.ge/ckfinder/userfiles/files/fetejisomogipijinexo.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=antivirus++for+pc+windows+8PDF 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_off00035fbf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00035fbf.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35FBF 19292 bytes
SHA-256: 42e6800ffa5017bdd82fd35047833dfbe235d084e968ae337049901a7594a2d2
font_01_sfnt_off0003922d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3922D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003a94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A94D 10712 bytes
SHA-256: 359f38dd87c256e198f8ecb891f3aefb1efeae6ffe7adc9452616dbf0cda8490