Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e1d955ddcbf309…

MALICIOUS

PDF

262.4 KB Created: 2021-12-20 14:09:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: b18a5b2fc506f9702995300c12b4e651 SHA-1: 2b259c13845c5bef1b0454843f2a3a62cf065c8a SHA-256: b6e1d955ddcbf30957b37d1f5a7545e98a34923c651df783396928e4e16cae8f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7829

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://tivirtual.com/userfiles/file/4427199248.pdf In PDF document text
    • http://agapetown.net/ckfinder/userfiles/files/31509261385.pdfIn PDF document text
    • https://promtour-rural.ro/userfiles/file/nalakumonarudo.pdfIn PDF document text
    • http://www.enfersalus.com/ckfinder/userfiles/files/redasasi.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135875adda00---48658877956.pdfIn PDF document text
    • http://sheilahancock.net/blogfck/file/51568165826.pdfIn PDF document text
    • https://yogaspotny.com/userfiles/file/11313844375.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/rhduasie9fgseoei40kh95q3n5/28785343849.pdfIn PDF document text
    • http://alltimescare.com/attachment/files/wakajo.pdfIn PDF document text
    • http://holland-ex.com/images/blog/file/4576839548.pdfIn PDF document text
    • https://www.ebenisterie-burette.com/ckfinder/userfiles/files/xatulularilenoga.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/dvo3jtrkppka8dt4e2279tcpqs/bumipetifavemuroxuloj.pdfIn PDF document text
    • http://anktk.ufnk.fr/app/webroot/files/file/fisikoniketilolimorij.pdfIn PDF document text
    • https://bunyaminerdemir.com/resimler/files/fogoruladolizibudid.pdfIn PDF document text
    • http://officinedesign.it/userfiles/files/notobavoputegudor.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b0b535bbb6---28916554265.pdfIn PDF document text
    • http://commsoft.nu/demo/ktb/wsmbilder/files/rokezokudatafazoxume.pdfIn PDF document text
    • https://alhurwallpaper.com/Files/files/36788082501.pdfIn PDF document text
    • http://gamaxmotor.cz/data/dokumenty/46047563723.pdfIn PDF document text
    • https://alyosserspneed.com/userfiles/files/61034438007.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-9-19/20210919204925254308.pdfIn PDF document text
    • http://85560891.com/upfolder/e/files/20211011095844.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/depetagaj.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/5b31bde58645bedf88b11cd9c9f720d5/53058448017.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/70969571744.pdfIn PDF document text
    • https://refakatci.net/userfiles/file/22990646893.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/1hHberoKktI/uplcv?utm_term=bhoot+fm+21+september+2019PDF 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_off0003acb7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003acb7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003acb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3ACB7 10872 bytes
SHA-256: 1b112f03d41b63316b1971da6c279979595523c99414cd7e8d097ccb6b5d55ff
font_01_sfnt_off0003c5c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C5C1 18436 bytes
SHA-256: a7d6cafe1c0933f8e8ba36d9ac341ae3979c1672419286b1422b7562297bae71
font_02_sfnt_off0003f4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F4CB 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336