Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99e9198a7ceb624…

MALICIOUS

PDF

316.7 KB Created: 2021-12-17 18:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 011de094c6e6c198e20c99d05dff959b SHA-1: 731b60e6063dde8acb570f2a53ea411c721f0242 SHA-256: f99e9198a7ceb6243a5eda1500d2423be7fc4db5f60392cc9b38887ddf2d417f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8383

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://ailani.org/wp-content/plugins/super-forms/uploads/php/files/01c9f3c35c0c38d57cc9f41c301ae8fb/72991255178.pdf In PDF document text
    • http://www.tm-africa.com/beta/public/uploads/cms_filescms_files/65649774121.pdfIn PDF document text
    • http://4els.ru/uploads/images/files/72856091050.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///35254280284.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/c9f8dce47402387f6a4933f51636a6eb/gagaxogisobafoxuku.pdfIn PDF document text
    • http://di-tech.kr/fckeditor/userfiles/file/venedilapovuku.pdfIn PDF document text
    • http://audidalys.lt/ckfinder/userfiles/files/36070100599.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/21455890404.pdfIn PDF document text
    • http://phuongsen.com/img-chamthi/files/13893269856.pdfIn PDF document text
    • http://tw-echen.com/uploads/files/202110150854358576.pdfIn PDF document text
    • http://imi.vc/upload/files/11120722591.pdfIn PDF document text
    • https://argentinaproduct.com/ckfinder/userfiles/files/tasozodipag.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/kodemajifigenuxebebuzoz.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161b23d0f862a1---22309834721.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/79006356221.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/raxozisesewisudunuja.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/51131252433.pdfIn PDF document text
    • https://www.adoz.cz/ckfinder/userfiles/files/xawelubuxufunezudino.pdfIn PDF document text
    • https://anne-berger.de/sites/anne-berger.de/files/fkcfile/22975218499.pdfIn PDF document text
    • http://doudou.tw/userfiles/files/womajopadigiliwerofu.pdfIn PDF document text
    • http://sunmoon-glory.com/web/upload/files/wufaxelibi.pdfIn PDF document text
    • http://www.firengo.com/userfiles/files/rofabulubeluguziw.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/2I9n2o-U8HI/uplcv?utm_term=how+to+reheat+maggiano%27s+fettuccine+alfredoPDF 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_off00048543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48543 11132 bytes
SHA-256: 078b833caf91d0795cc09c7e89431905ffd4598fc04c0f0a95ebe92c57252a05
font_01_sfnt_off00049eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49EEE 17868 bytes
SHA-256: c477e1359b264db0d345367148e73f091b5cec8883d1c17d6ea00cd6c72fe887
font_02_sfnt_off0004cd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD6E 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336