Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb04de9d957ff2ad…

MALICIOUS

PDF

210.4 KB Created: 2021-12-15 11:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: a5e2c78a0ad622e851e2a5f22e66298c SHA-1: 877df9f975db118b945b9d82522a0d80234c2b72 SHA-256: fb04de9d957ff2adf28589f04b3c4fbaff1a2ebf6939800e33c796f4a466d90d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7758

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://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614bfa93416cf---sugiz.pdf In PDF document text
    • http://belloverde.net/emailer/file/25519898336.pdfIn PDF document text
    • http://villkasz.hu/editor_up/fugujufikimolalunefiner.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/30fc20ebee2d34e359168cb74aed7275/53962738382.pdfIn PDF document text
    • http://thepartybooker.com/userfiles/file/nelefomutogemovuvofexejig.pdfIn PDF document text
    • http://classicalgardenfountains.com/uplds/file/ginokudulagujojesapasiz.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/16682505651.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16132ed4e48924---kuxubaxoti.pdfIn PDF document text
    • http://adacu.org/userfiles/file/20210923134828.pdfIn PDF document text
    • http://panelko.hu/files/files/jizivinerupajifuwijarux.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///81544336938.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/gunuketome.pdfIn PDF document text
    • http://ccsl.asia/files/66696166086.pdfIn PDF document text
    • https://arrad.ch/modules/ck/ckfinder/userfiles/files/78557825096.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1614d7f8ba28d2---wabobezeluxazilozekosiwa.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/betofafiw.pdfIn PDF document text
    • https://silverstonedevelopments.com/ckfinder/userfiles/files/88999057545.pdfIn PDF document text
    • https://aashianarealty.com/file/gesaf.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/774d72cd6870f5af27a82aa82930c8e0/lipides.pdfIn PDF document text
    • https://servingltda.com/userfiles/file/24456343534.pdfIn PDF document text
    • http://autoklej.pl/app/webroot/media/files/lasanotisevokasusetiv.pdfIn PDF document text
    • http://i-akparat.kz/ckfinder/userfiles/files/mubodesosatu.pdfIn PDF document text
    • http://jeykrishnaclub.com/images/file/75047657790.pdfIn PDF document text
    • http://greenvisioninternational.gm/userfiles/file/zizosevejavuxun.pdfIn PDF document text
    • http://cmsdoc.blum-group.de/data/cmsdoc/userfiles/file/68985298452.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/4dZi1sgP-vI/uplcv?utm_term=little+chief+front+load+smoker+reviewsPDF 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_off0002d9e2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002d9e2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9E2 10944 bytes
SHA-256: caa2838b45a9dc3282db3a84243349271844309988d4764e45e4a7b78e98e1c3
font_01_sfnt_off0002f31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F31D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000309bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309BC 18608 bytes
SHA-256: fc5f4cb3ae47087304421d51ca21caef6ad6230ea0d8b0f68c5644f0ba04dc7e