Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb89f83659db2440…

MALICIOUS

PDF

282.3 KB Created: 2022-03-04 22:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: decc1fab285893e0f0b5c1eb1deda966 SHA-1: 431545e0c5303c606add678e3aa5243f98d0dfd0 SHA-256: cb89f83659db24400296b8aed69115407a37fe88a29acb66d89804c13c3202e9
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7513

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yoyep.co.za/XSRYdR1H?utm_term=guardian+university+guide+methodology PDF link annotation
    • https://novamakine.com/upload/ckfinder/files/61252230038.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/nefosoxopopataj.pdfIn PDF document text
    • https://ans5680.preneed91.com/upload/files/12202786868.pdfIn PDF document text
    • http://vector-luczak.pl/new/fck_user_files/file/gixul.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16212f1f057a90---38978122819.pdfIn PDF document text
    • http://huyminhplastic.com/upload/files/79320493280.pdfIn PDF document text
    • http://huile-de-nigelle.info/userfiles/file/dupifaxotovazu.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/bizine.pdfIn PDF document text
    • http://avtokapriz42.ru/userfiles/file/kumijava.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///zaguvifesugititidota.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16217b98844745---13429111421.pdfIn PDF document text
    • http://muratdizayn.com/panel/kcfinder/upload/files/85216765974.pdfIn PDF document text
    • https://998.geektic.com/geektic/files/18663280217.pdfIn PDF document text
    • http://dobrodetel-tula.ru/kcfinder/upload/files/65154719853.pdfIn PDF document text
    • http://analizmatbaa.com/panel/kcfinder/upload/files/78937335629.pdfIn PDF document text
    • http://deauville.ru/files/file/gipisazamojusosifopazo.pdfIn PDF document text
    • http://hutnia.pl/userfiles/file/xejerawu.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/162019512eb05c---85192501507.pdfIn PDF document text
    • http://tarotschule-stuttgart.de/sites/default/files/file/56302922969.pdfIn PDF document text
    • http://euro-service.org/kcfinder/upload/images/38760060128.pdfIn PDF document text
    • http://zonatourism.com/media/ck/files/zatebowotesowoxipi.pdfIn PDF document text
    • http://ajarnveerapong.com/UserFiles/file/nilivixegeloditusejutelin.pdfIn PDF document text
    • https://xn----7sbbzeackusl5afk8czi.com/admin/kcfinder/upload/files/91520342141.pdfIn PDF document text
    • http://ww2.forte.com.pl/js/ckeditor/kcfinder/uploads/files/leninu.pdfIn PDF document text
    • http://penzion.sarmo.cz/Images/file/lepowegududigidevudaporav.pdfIn PDF document text
    • http://yongqingtech.com/d/files/xilejagivagenapewuvokove.pdfIn PDF document text
    • https://markaoyun.com/calisma2/files/uploads/57347395860.pdfIn PDF document text
    • http://maudchristan.nl/ckfinder/userfiles/files/badiwofuta.pdfIn PDF document text
    • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/65244069765.pdfIn PDF document text
    • https://www.nysc.lk/dmin/include/ckeditor/kcfinder/upload/files/sabek.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1620537994af3b---16001275304.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/hbk8rchlbu8u9qft60ugujkqv2/tubalurufefatup.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/162158b6289ac6---boworiperu.pdfIn PDF document text
    • https://9275522-travel.com/userfiles/file/630267056.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_off0003f54e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003f54e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F54E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00040c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40C69 19632 bytes
SHA-256: abd556e4a0958292b0cd6e69d325c136e1d61c3160042e7346112dfceb408515
font_02_sfnt_off00044060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44060 11012 bytes
SHA-256: 0595b06bec7a86b9cfb3288980342c4e0204945f319366a3185402d08869e5bc