Malicious PDF — malware analysis report

Static analysis result for SHA-256 450732fcd9ef1d20…

MALICIOUS

PDF

79.3 KB Created: 2021-11-12 02:26:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: f57fbbcb75c95d8255a522b7f3b910dd SHA-1: 8e330c94158ae6e415cbcd5364eeaab0a598b52c SHA-256: 450732fcd9ef1d2038b2f2545da48e4cd232d21aa1ee3cb8cbcd8bc222d4c140
266 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://atomiccm.com/userfiles/files/lorigofegekipax.pdf In PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/161414d9daf626---kagamusafizoxopapan.pdfIn PDF document text
    • http://stromzeleny.cz/file/zunizevimovuferos.pdfIn PDF document text
    • http://kiszelyugyvediiroda.hu/docs/file/fukivo.pdfIn PDF document text
    • https://lyna-garage.lynacarrental.com/htdocs/cljr/data/files/xojexiguxokijola.pdfIn PDF document text
    • https://ribaczpeter.hu/files/file/90198723060.pdfIn PDF document text
    • http://acril.ru/ufiles/files/4546174167.pdfIn PDF document text
    • http://rurisnet.org/images/file/31653093167.pdfIn PDF document text
    • https://naveenent.com/administrator/imagetemp/file/lebejewedox.pdfIn PDF document text
    • http://studiomedicoveterinariobellucci.eu/userfiles/files/sowurivid.pdfIn PDF document text
    • https://zenithservicos.com/userfiles/files/13207110831.pdfIn PDF document text
    • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/zupuxopu.pdfIn PDF document text
    • http://sz-frp.com/pic/20211102033030415.pdfIn PDF document text
    • http://peneleos.pl/userfiles/file/bemibalefu.pdfIn PDF document text
    • https://csmgh.net/pevron/www/img/file/33298700494.pdfIn PDF document text
    • https://www.rosebankprimary.co.za/inc/ckfinder/userfiles/files/ragijowazijedesatazuv.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/nomijudoritukinifove.pdfIn PDF document text
    • http://www.horakgolf.cz/ckfinder/userfiles/files/kowifesimetip.pdfIn PDF document text
    • https://km2804.com/ckupload/files/80634988685.pdfIn PDF document text
    • http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/81582611624.pdfIn PDF document text
    • http://ban-mat-canh-kinh.theonejsc.com/userfiles/file/dexemozuloxe.pdfIn PDF document text
    • http://anitacalderon.com/ckfinder/userfiles/files/xatuganizeketedimok.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/KGDyd8lM0uI/uplcv?utm_term=imo+apk+for+pcPDF 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_off0000d33d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d33d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33D 10044 bytes
SHA-256: 79a7f505d3b7927ddc22df3be00bfc464252813d722763aaafcbd9e774695db6
font_01_sfnt_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off000100b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B2 18064 bytes
SHA-256: 4c5cbe2583c998b9e487b1234353bc7f13b25d55b685e0e0d7acbefa033928ef