Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f6b6dfc3c0fb13…

MALICIOUS

PDF

333.9 KB Created: 2022-02-05 12:19:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 8f9e22a45075ec9ef59910d155fd22d2 SHA-1: d455ac46b17af1ebc81bc322155e96b4a911120a SHA-256: a4f6b6dfc3c0fb13ad9f1d758043a6b4a2c975c0a6275fe0a3759e1bfebbcc72
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7372

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://fecuq.co.za/XSRYdR1H?utm_term=flanders+conference+hotel+ielts+listening+answers PDF link annotation
    • http://dlshixiang.com.cn/ckfinder/userfiles/files/81546785329.pdfIn PDF document text
    • https://pisausakti.com/contents/files/69121715589.pdfIn PDF document text
    • http://malerbetrieb-malanders.de/Webseite/pics/fotos/1/file/91947684290.pdfIn PDF document text
    • http://bamboomfi.com/htdocs/cljr/data/files/10037569291.pdfIn PDF document text
    • https://www.truck-transport.com/ckfinder/userfiles/files/rizizizepevileri.pdfIn PDF document text
    • http://eros-arena.name/eros/userfiles/file/mutujir.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616f6b94dd836---xonavuxeliniju.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/lgs4v1jnatkftok4g7udfrq1c6/67988846730.pdfIn PDF document text
    • http://ekosertifikat.uznature.uz/userfiles/file/kovusikam.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/60007b1ad9ba7b5071883c22834c7cc5/54792027381.pdfIn PDF document text
    • https://allora-tour.by/var/upload/file/20557142243.pdfIn PDF document text
    • http://stroi-sistema.ru/img/4232499350.pdfIn PDF document text
    • https://cobaltinc.org/userfiles/file/rabevidotov.pdfIn PDF document text
    • https://biothiennam.com/media/ftp/file/fafapagafitusapodu.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/0382a396fd675581f1a95f5b9d2d92ae/62285755972.pdfIn PDF document text
    • http://yuemeism.com/uploadfiles/files/gajajov.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/da78bef2a36c870f53bef9ab104447f0/73087857421.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/kimiserofesotoruvanu.pdfIn PDF document text
    • http://studiotecnicopinto.it/userfiles/files/fakaxanumirunov.pdfIn PDF document text
    • http://grafiport.com/userfiles/file/rewuzezopukakozened.pdfIn PDF document text
    • http://www.musicboxpiano.com/contentfiles/59278281506.pdfIn PDF document text
    • https://penmypoem.com/new/admin/uploadfiles/file/wazamoxilizipelid.pdfIn PDF document text
    • https://digireg.at/upload/138805982.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613df6fab5d12---xukopotowadibazunevupazi.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160debc3a05941---puwalajivudakevaju.pdfIn PDF document text
    • https://oazapiekna.com/zdjecia/fck/file/976501902.pdfIn PDF document text
    • https://khangle.vn/uploads/images/files/gimavakuzitudenu.pdfIn PDF document text
    • http://geodeslaboratori.eu/userfiles/files/setigol.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/4526752429.pdfIn PDF document text
    • http://ccforum.kr/uploads/file/1626253845.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/2glse7tauvqs5kuclstiu5olpa/69310663863.pdfIn PDF document text
    • http://3m18.com/images/editor/files/66670723914.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_off0004b924.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004b924.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004b924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B924 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004d044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D044 10820 bytes
SHA-256: 7bf4494a169aeea93aa4e4f14c74d1d6fba95f13fdf67538307f0b8509a0b6f4
font_02_sfnt_off0004e8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E8F9 31536 bytes
SHA-256: 5e6a259d4e8d62758b08626ee826a477b9a65661efddc4be29ee37508489c89f