Malicious PDF — malware analysis report

Static analysis result for SHA-256 624fee7e76141176…

MALICIOUS

PDF

220.3 KB Created: 2022-01-23 06:32:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: af7f157e07d937cab58dee66f74f4575 SHA-1: 258f68dddc864c223116746ba9335f417db738d6 SHA-256: 624fee7e761411768e7b2d6a657439a8bae1cc4af1dedaadd14d0aaa83e7e173
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9594

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vpl-bd.com/assets/ckeditor/kcfinder/upload/files/21024364114.pdf In PDF document text
    • https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/11672903570.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618a204d0fff4---nogodizofidal.pdfIn PDF document text
    • http://gemeinschaftshaus-grossmuss.de/demo/admin/editor/kcfinder/upload/files/dufedalukokejiz.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/fdc0ca0e4433bbd7c201272e17b21943/bokasulig.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16176920cbfa60---jimupexuxu.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16171d4880b4b0---jofomemeridezat.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/kurisugamewu.pdfIn PDF document text
    • https://kibledergisi.net/resimler/files/rojuguk.pdfIn PDF document text
    • https://nocrime.cntwn.org/ckfinder/userfiles/files/pemivimemodutojejegimifug.pdfIn PDF document text
    • http://erfanekeshmiri.ir/userfiles/file/ripimonixisokuzudafizo.pdfIn PDF document text
    • https://assignmentmart.com/ckfinder/userfiles/files/50599166916.pdfIn PDF document text
    • http://oris-am.com/editor_up/10252004499.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/hgk5pg0bg2kqpvronse4fu0uci/36047128631.pdfIn PDF document text
    • http://palaciodelosnavas.com/userfiles/file/28577775265.pdfIn PDF document text
    • http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/76347642627.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/g0qbj9r8q112o7st7hkficb5um/xorokogejukejob.pdfIn PDF document text
    • https://successstudio.net/userfiles/file/26093414675.pdfIn PDF document text
    • http://adamslakeband.org/userfiles/file/11577539468.pdfIn PDF document text
    • http://sieuthiduanbds.com.vn/kcfinder/upload/files/10674923299.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/23D8k0Ec_6w/uplcv?utm_term=free+family+feud+powerpoint+2016+templatePDF 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_off000304a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304A9 17336 bytes
SHA-256: cd603ab0a26e43d11b3f09fe8caf49ff97393f32d52f027789f09be223183ff4
font_01_sfnt_off000331b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331B5 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00034859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34859 11232 bytes
SHA-256: a67207be96d273e999777535e04777804dd51133560358fb6432e36ba443ea01