Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b87db4c5773f27…

MALICIOUS

PDF

196.5 KB Created: 2021-12-06 11:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: d05957d46ffd98c36adf58769a953744 SHA-1: f054788e3284507bd456727356ced1a319066bed SHA-256: 72b87db4c5773f2701c092fc430ad1f67d089c6d9780378827f75276c4e2daab
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8195

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://suliaox.com/v15/Upload/file/2021102383517313.pdf In PDF document text
    • http://americasbestwingsbeltsville.com/uploads/files/70454456428.pdfIn PDF document text
    • http://ser-buk.com/userfiles/file/15960421163.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/kof42ckvk7eunlatnr94pp4ue4/22414394825.pdfIn PDF document text
    • http://sipzip.com/userfiles/file/kipibokenonadupajupi.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/6539983272.pdfIn PDF document text
    • http://chaireyes.com/v15/Upload/file/2021111113475473.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1619f9df547980---wagefubesosepijap.pdfIn PDF document text
    • http://sportingfoundation.com/uploads/file/molulatimulutin.pdfIn PDF document text
    • http://aeu.pretty-match.com/upload/files/51263194021.pdfIn PDF document text
    • https://austdoorcaocap.com/upload/files/47816567996.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/30776663411.pdfIn PDF document text
    • http://ylpqzl.com/ckfinder/userfiles/files/sujagofusorinuvapogejozo.pdfIn PDF document text
    • https://magiccat.pro/ckfinder/userfiles/files/95824028504.pdfIn PDF document text
    • http://wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/wagubodebare.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/40742005462.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/sujizupadufabigi.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1619ff8285da71---novoxomaxex.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/gukosativetutenunobagikow.pdfIn PDF document text
    • https://2b3la571ga-70p.com/contents/files/79663047191.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/vezodavogutezovumotodaxe.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/59574515701.pdfIn PDF document text
    • http://shop-cartuning.pl/userfiles/file/lesubeputeritamajune.pdfIn PDF document text
    • http://ambulatorioveterinariorigolon.eu/userfiles/files/61161803051.pdfIn PDF document text
    • http://dxczx.com/ckfinder/userfiles/files/20211011_203950.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16183cd20e065a---61485013435.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/RC0zOYPQW8A/uplcv?utm_term=corel+videostudio+x7+tutorial+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_off0002a201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A201 18748 bytes
SHA-256: d788cf834275bbb8ea49fa8569ebbc192e232a769109df5f4a48fde7bae1ec73
font_01_sfnt_off0002d2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2D9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0002e97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E97D 10736 bytes
SHA-256: 02726d00a8d593d69a5dd0ec22de2eb417dc596077b4816e4e74ebfa32395e2e