Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99b9767de374532…

MALICIOUS

PDF

453.3 KB Created: 2021-12-22 19:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 8b1f1bc29c722db75fdead41ec1bae33 SHA-1: 0e63b079934efe69e57f3c65d9b1e453fd12cda2 SHA-256: f99b9767de37453258d96db77bbe66a31e546cafd97ae87f1e4970e5dcb8e3bb
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5095

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 http://homeopathyhongkong.org/files/niladegazubijozujag.pdf In PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16178a2d7606ae---92110574313.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/2743855220.pdfIn PDF document text
    • https://peltonfell.org.uk/ckfinder/userfiles/files/lepirew.pdfIn PDF document text
    • https://kentacademymiango.com/userfiles/file/keredamototevixisu.pdfIn PDF document text
    • http://srub-servis.ru/userfiles/file/kojosukof.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/h3pa4fatvnnket9aapids4a5r2/jezajadugoxabif.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/ruvavejorarubobebavab.pdfIn PDF document text
    • https://travelone.ae/userfiles/files/9196231469.pdfIn PDF document text
    • http://locnuocvietmy.com/Images_upload/files/wurovidobivokizarijidemo.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161590c733a4fc---69917655929.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/sijamafogugin.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614fd3778176c---bulizijonogenerofef.pdfIn PDF document text
    • http://finalbrand.cz/upload/file/roruvunoxowiwatu.pdfIn PDF document text
    • https://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/91448706042.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b5834315ab6---gomibiparuronigumizosakab.pdfIn PDF document text
    • https://solarexperte.ch/fckeditor/editor/images/file/figubotuxokarutepisovo.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/408c9c9b1fd952b847f4bd6ca7a34fe0/24872377686.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/26966539914.pdfIn PDF document text
    • http://ud2-140.com/files/62200694081.pdfIn PDF document text
    • http://hotelborgodeipoeti.com/userfiles/files/56565365613.pdfIn PDF document text
    • http://trinitysportsandleisure.ie/userfiles/file/86623590618.pdfIn PDF document text
    • http://suchanekstomatolog.pl/files/file/sativud.pdfIn PDF document text
    • http://dejonghenico.be/sites/default/files/file/84201617315.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/xolinu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BcFPVxLj4jw/uplcv?utm_term=comparison+of+adjectives+games+pdfPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006a839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A839 11144 bytes
SHA-256: 8282b465e5fa9d62936cecc0d5ffa2a5285b0cece08a6956148927abaed495ca
font_01_sfnt_off0006c20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20B 17552 bytes
SHA-256: 7ae648abb261e281c523b0c838b32ae6bef2f59f55509d048a9ce08feb5d4dc6
font_02_sfnt_off0006efa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFA5 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336