Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f669558765f1606…

MALICIOUS

PDF

266.5 KB Created: 2022-03-21 14:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 22a9e8f3623cd1bb562b62e39577770d SHA-1: f9e2e86628447f46ee833862a84a58fe57d24b23 SHA-256: 8f669558765f1606b8f3f1dc774f51c81d72bbddc8f8f00902960d09fe739735
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7783

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://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/151846fb20ad4ed59e7fd333ea802ba9/75712995049.pdf In PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621a7814bf241---35123044468.pdfIn PDF document text
    • http://decorstore.eu/upload/file/zufaxusozidepomebum.pdfIn PDF document text
    • http://www.portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/fikolojejajulole.pdfIn PDF document text
    • https://www.madenisg.org.tr/kcfinder/upload/files/nexevazibodo.pdfIn PDF document text
    • https://10s317.com/uploads/files/202202251851578135.pdfIn PDF document text
    • http://cocoal.com/uploads/file/22661015914.pdfIn PDF document text
    • https://armature.ir/cache/fck_files/file/31166901499.pdfIn PDF document text
    • https://venus-forever.com/image/files/lozogunajotosigatep.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/40142749814.pdfIn PDF document text
    • https://mannlicher.hu/admin/kcfinder/upload/files/ravatipufazupifowit.pdfIn PDF document text
    • http://ud2-140.com/files/38034765966.pdfIn PDF document text
    • http://jovanrajsic.net/storage/files/nekelasisalage.pdfIn PDF document text
    • https://tuinvandecruys.be/file/31477101881.pdfIn PDF document text
    • http://varvshistoriska.com/file/64823964224.pdfIn PDF document text
    • https://tidymoney.com/ckfinder/userfiles/files/53596359840.pdfIn PDF document text
    • http://namngonviet.com/user-/files/vakazupugabasaxuranutu.pdfIn PDF document text
    • http://jd6618.com/jd6618/file/2022-2/file/LwpCms2022_02_09_14_34_47_7296.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161fa221fe0663---vuwiguvu.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/55439457536.pdfIn PDF document text
    • http://sententtech.com/file_media/file_image/file/59073043057.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/10580575308.pdfIn PDF document text
    • http://asv-solnice.cz/_files/file/44824952551.pdfIn PDF document text
    • http://bycongroup.com/UserFiles/file/tematabogok.pdfIn PDF document text
    • https://subarini.sibiuimobiliare.ro/mm/file/99215217704.pdfIn PDF document text
    • https://pma-germanlct.com/uploads/files/46202036738.pdfIn PDF document text
    • http://mhfmjournal.com/data/22/2/55/64/2544879/user/2788947/htdocs/userfiles/file/fajufuvosuzigaduxakoken.pdfIn PDF document text
    • http://funagamex.vn/PhuongNamGroup/userfiles/files/voropejidakite.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/162370932e0e47---56467865936.pdfIn PDF document text
    • https://editionsitaliques.com/userfiles/file/wuvolij.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620cd79d460bf---17515815183.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/162173e0343583---40730573000.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=sat+grammar+practice+pdf+with+answersPDF 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_off0003b864.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003b864.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003b864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B864 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003cf84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CF84 11064 bytes
SHA-256: 1622871fb19ea1b65915f8786a18a9b049f84328fe10ef66df2853e93c705caa
font_02_sfnt_off0003e8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E8F3 18768 bytes
SHA-256: 74c765e08324b23e2bc3acc532424b978bcd67eb5779c11447997a7c700ef557