Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f879d8f02a2811…

MALICIOUS

PDF

367.5 KB Created: 2022-02-07 14:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: e49edf35b55ed72a8a07f389deb043a0 SHA-1: 2790b92668dc5f36c68607fe395b304ef61da6f6 SHA-256: a4f879d8f02a28112ef50b725ca287daeab08c7c4bd473808cbd6ffc25807d54
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7677

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://lazav.co.za/XSRYdR1H?utm_term=wanted+bengali+movie+jeet+srabanti PDF link annotation
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612937e90ddab---suzobisefevixa.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/a2cassotbo1b6hrrdsp7m9u8i7/paxojonasiko.pdfIn PDF document text
    • https://alhasooncorp.com/Files/files/82073363516.pdfIn PDF document text
    • http://krupongs.com/images/file/mukugepabopipibomewuwezab.pdfIn PDF document text
    • http://csa.china-led.net/static/editor/ckeditor/ckfinder/upfile/files/suziveva.pdfIn PDF document text
    • http://sevennews.com.br/ckfinder/userfiles/files/24106380954.pdfIn PDF document text
    • http://xn----8sbfhu6ab4bqv.xn--p1ai/userfiles/file/12671089453.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/92360016275.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16180a16c29927---guwupufomivosegivaseviv.pdfIn PDF document text
    • https://cuacuonanbinh.com/userfiles/file/40190727641.pdfIn PDF document text
    • http://hyundainhapkhau.net/upload/files/wulakolamaralagabos.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/261442965c8a62db1f4b0991d899f7b3/sefadusarokuwejepek.pdfIn PDF document text
    • http://chukguwang.com/files/fckeditor/file/moroxowabasujemimopuvip.pdfIn PDF document text
    • https://cortado.funeralinnovations.com/copilots/upload/files/77407064179.pdfIn PDF document text
    • https://beyondpins.com/calisma2/files/uploads/fakolijekofilo.pdfIn PDF document text
    • http://offokin.ru/sites/default/files/file/tawumabumuturaxovenev.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/gufonu.pdfIn PDF document text
    • http://torremaggiore.sitmap.it/files/files/22873011468.pdfIn PDF document text
    • http://quetthe.com/upload/files/lupupap.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/5553462761.pdfIn PDF document text
    • https://granitabrasive.com/editor_up/ponaboluxurijekaxe.pdfIn PDF document text
    • 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_off00055328.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00055328.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55328 17204 bytes
SHA-256: ecf527be8f04e2f9ea0f2e8e457bf7bf42b44415be304f8488adebc344ef3312
font_01_sfnt_off00057f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57F28 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00059648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59648 10920 bytes
SHA-256: 580c5ea593e8aa7231692d6afd2c95c2c3c08cb5bb1f4a36e8d276227bf258d3