Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d52fdc7883084f…

MALICIOUS

PDF

554.6 KB Created: 2022-02-26 00:21:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-27
MD5: 33756d10b7d997ec22bf2310ec48cd2c SHA-1: c2542efe0c634b271af2139a5ecff86b8a7c4cb7 SHA-256: c7d52fdc7883084fbbcea010c80cce81f7bd6128f744aa9dc060d71d57e716b9
106 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4779

Heuristics 5

  • 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.
  • 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://psn-monolit.ru/img_file/files/95091410693.pdf In PDF document text
    • http://dynamic1984.com/user_file/file/kanikomisanivarasegi.pdfIn PDF document text
    • http://rostocker-taxi.de/resources/files/bemanudibowidexol.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/53450376004.pdfIn PDF document text
    • https://olterus.net/contents/files/xijaduzejumeligewezuj.pdfIn PDF document text
    • http://jiducn.com/userfiles/aa/file///sikozu.pdfIn PDF document text
    • https://webvitamin.vn/app/webroot/uploads/files/3146144856.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/38061766462.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/4458734682.pdfIn PDF document text
    • https://mollis.rs/files/mofozunepuwozubevexifupi.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///pinagadebufakemi.pdfIn PDF document text
    • http://residenzaeden-albisola.com/userfiles/files/vunuvuvemegupewulagi.pdfIn PDF document text
    • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/mamozunubimuwabelo.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/58167609185.pdfIn PDF document text
    • https://prizmaemys.com/img/files/37931037142.pdfIn PDF document text
    • https://frmf.merkafoot.com/stock/file/69364689282.pdfIn PDF document text
    • http://duythuc-bearing.vn/uploads/userfiles/file/munudekotow.pdfIn PDF document text
    • http://key-pro.jp/kcfinder/upload/files/vekenuv.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/mepivomuzuvonabid.pdfIn PDF document text
    • http://mayfairplace50.com/kcfinder/upload/files/nomovepelawez.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/nojasefawuvita.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=cyber+security+notes+pdfPDF 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_off00083d83.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00083d83.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00083d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D83 17732 bytes
SHA-256: ead72620be71a407af6e27087d32072f9bb9656e4c1b5b3494045b7d859e1736
font_01_sfnt_off00086b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B9D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000882bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882BD 10788 bytes
SHA-256: 696164bf53fbe1c527afd076bb49a0dc7ac797b35142329f28a37972e075d391