Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8db3b89cdb416a…

MALICIOUS

PDF

292.4 KB Created: 2022-02-04 01:37:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: ed5fe61c0a60d5c99332b0559840a3a5 SHA-1: 9b9ac1cce6d79bfece7a9a02fc8f88f313cf0f18 SHA-256: cb8db3b89cdb416a8c1c7686b688d15d137dc2758ab7513f2d0324bc8f8aa24f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7944

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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://ettis.net/kcfinder/upload/files/zidubigiridovunujomar.pdf In PDF document text
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/49374427468.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/vurol.pdfPDF link annotation
    • https://alstar.uz/images/shared/file/34383751388.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/duparizufe.pdfIn PDF document text
    • http://budaikepkeret.hu/uploads/file/bigefipikamigenikevigume.pdfIn PDF document text
    • http://zhongkerb.com/userfiles/file/36011867781.pdfIn PDF document text
    • http://upasamed.org/Content/uploads/files/81098435854.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16133481472945---52213814893.pdfIn PDF document text
    • http://k12kos.com/ckfinder/userfiles/files/47194202636.pdfIn PDF document text
    • http://fibertechnique.com/tmp/file/57136610444.pdfIn PDF document text
    • http://rsst77.ru/upload/files/69084105537.pdfIn PDF document text
    • http://montpellier-businessplan.fr/mbp/upload/images/images/upload/ckfinder/50111706616.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/1952576042.pdfIn PDF document text
    • http://gobelsprofil.com/upload/files/joditowevapanoru.pdfIn PDF document text
    • https://planbmedia.hu/files/jusepujabuka.pdfIn PDF document text
    • http://sipsak.nl/userfiles/file/zovaxi.pdfIn PDF document text
    • http://cautrucpalang.vn/webroot/img/files/14909166965.pdfIn PDF document text
    • https://bientannamhuy.com/wp-content/uploads/files/vamajidusabawizaxobewiwok.pdfIn PDF document text
    • http://xn--9w3b11kh5l.com/ckupload/files/wonazadotidewukovifozu.pdfIn PDF document text
    • https://shian-jin.com/UserFiles/files/pagomusozaxibox.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/709fbf14fa54a83a77ea64c2922a3cd9/68619842077.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16181d9c4b542b---sesizapuvufuva.pdfIn PDF document text
    • https://lazav.co.za/XSRYdR1H?utm_term=bacula+bat+windowsPDF 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_off00042494.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00042494.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42494 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00043bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43BB4 10508 bytes
SHA-256: e97802670873a93cf1801e487f3b6843e738ecd990882fd79ce5aeef729d1962
font_02_sfnt_off000453d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x453D2 17860 bytes
SHA-256: b707601b6b47de762c659f52c9ac09cff3adcdd254cb5b782c7beddb28270e77