Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3b1d974ef1b621…

MALICIOUS

PDF

261.9 KB Created: 2021-12-23 00:18:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 8fff48fea865ee808bc8be391652ad49 SHA-1: 6c0a1cc61e4b3469ae3de405c563fa2c5df02981 SHA-256: 0d3b1d974ef1b621cac710dec59f4b92a654ce2c9a660e9d7b5ff2e4c0ad3068
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7525

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://cosmopolitanhotel.eu/uploads/wysiwyg/files/xubosunuzajofijimepumer.pdf In PDF document text
    • http://sperrincaravans.com/images/file/29620447960.pdfIn PDF document text
    • https://vhssirimpanam.org/ckfinder/userfiles/files/tekozoji.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614560c2cf398---pufenekoguvoso.pdfIn PDF document text
    • https://gonguyenkhoi.vn/upload/files/jipizibobigevilu.pdfIn PDF document text
    • http://allgeology.ru/ckfinder/userfiles/files/zonutanoloro.pdfIn PDF document text
    • https://cet.sk/res/file/36836354776.pdfIn PDF document text
    • https://hfbee.tw/upload/ckfinder_temp/files/20211129125638.pdfIn PDF document text
    • https://812423.situshoki1.com/contents/files/pabep.pdfIn PDF document text
    • http://jysfh.com/upload_fck/file/2021-11-15/20211115142054841375.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/9f2c1e1ea5be389cca1138deebeaf9ee.pdfIn PDF document text
    • http://locke-3c.tw/uploads/files/202109172302147179.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16197f3277443e---39677809070.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617095ce40d83---64068951586.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/7344594574.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c26d63911f6---mokigaraw.pdfIn PDF document text
    • http://dywin.com/uploadfile/files/zufatozilorifigibe.pdfIn PDF document text
    • http://apartmany.cucoriedka.sk/data/files/parunegokukexu.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/heuiftuhc07rf0juhjl5arpfmt/ximenojotajitijuj.pdfIn PDF document text
    • http://onyx-innovations.com/assets/ckfinder/userfiles/files/63285403578.pdfIn PDF document text
    • http://nhadep30giay.com/uploads/image/files/18169901266.pdfIn PDF document text
    • https://krygina40.ru/UserFiles/File/repijurobusebalu.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/cmwvf4RlXg4/uplcv?utm_term=cuales+capas+forman+la+atmosferaPDF link annotation
    • https://kpk.1c.ru/admin/rc/ckeditor/kcfinder/upload/files/xanekesesekekakirasemef.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 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_off0003a5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A5CD 19512 bytes
SHA-256: 343c8545a2bbaed3ce76282f872d55427282125984ac89d6b2f7d9062b4bc610
font_01_sfnt_off0003d7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D7B4 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0003ee58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EE58 10680 bytes
SHA-256: bd3f58d8e2ebf472014a25c9b6c38fd7ec1372c524a645a4a4a4b09134d7c765