Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ccb5e68cb452fa…

MALICIOUS

PDF

350.0 KB Created: 2021-12-15 21:35:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-01
MD5: f6e50f8e83c34b59814c47e1821d3780 SHA-1: 65ea3ef36c4ab9f46f021728f533c676fb96103b SHA-256: 25ccb5e68cb452fa7acd5e8303d16b9099fd0e0cef8c899582743e7a2558074c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8837

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://crysiq.ru/uplcv?utm_term=goethe+theory+of+colours PDF link annotation
    • http://kientrucnhacuagio.com/upload/files/89618366232.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617a8e8713717---14337893553.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/a34c6c5e7046f1cda839159a869a8db8/gufezekijumifasonunorozu.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e7752bc4cb---60868160352.pdfIn PDF document text
    • http://quesnelbusinessnetwork.ca/userfiles/file/tibivumulavozetit.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/969469569.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613826d050d51---47366287657.pdfIn PDF document text
    • http://rowsontw.com/shopadmin/upload/files/29126646279.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/bopuzinevuxenubofo.pdfIn PDF document text
    • http://doanekeyes.com/userfiles/docs/22289297076.pdfIn PDF document text
    • https://oolong-dining-co.com/webroot/editor-uploads/files/42367961908.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1616d49ded6608---razenonanovuxiwosel.pdfIn PDF document text
    • http://bouwbedrijfansing.nl/userfiles/file/xidetejogepaboko.pdfIn PDF document text
    • https://monyetjoget.com/contents/files/zomepebenavusigiga.pdfIn PDF document text
    • http://equipociclistaugeraga.com/ciclistas/userfiles/file/buwok.pdfIn PDF document text
    • http://pzhjintai.com/upload/files/14808509012.pdfIn PDF document text
    • http://baldonimarcostudio.eu/userfiles/files/popafovawotop.pdfIn PDF document text
    • http://vangphutai.com/images/uploads/files/69873167039.pdfIn PDF document text
    • http://aktifmedya.com/dosyalar/files/35076377865.pdfIn PDF document text
    • https://tuyendung.vinaonegroup.net/upload/files/kifajipiregilipaki.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/62587868974.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_off000506cd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000506cd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000506cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506CD 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00051d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51D6C 20288 bytes
SHA-256: 66c2684de0117f32d00b60cf8604c3a1f71344386641d4e558a31bae30a571f5
font_02_sfnt_off0005525f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5525F 10328 bytes
SHA-256: 3395006e2a692dc78b907586da06f47ea2c9588d3024781bdb40fef5e0aa7012