Malicious PDF — malware analysis report

Static analysis result for SHA-256 30902dd5d0ad6efb…

MALICIOUS

PDF

146.5 KB Created: 2021-07-28 05:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 63a58e984c21cb497960bef27d1907fb SHA-1: 14141561605e95f4ddd632180469db52b661fdf2 SHA-256: 30902dd5d0ad6efb5db3d78fe68c12f9f9d586e83f518be88b4dfa64ec0cb08f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The heuristics reveal that the document functions as a link farm, directing users to multiple external websites hosted on potentially compromised or disposable domains. These links are likely intended for phishing or to serve as a distribution point for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mwcapital.net//ckfinder/userfiles/files/28501530498.pdf In PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/dfb9fa864ce850bce7933707fac382c2/lisugasifo.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160adfc8dbe38c---6743771756.pdfIn PDF document text
    • http://klasykarozrywki.pl/public/images/fck/file/kibinakofevadikidaxun.pdfIn PDF document text
    • http://fosterfreezesantarosa.com/uploads/files/45712877024.pdfIn PDF document text
    • http://suapaiatuipelehakefamily.com/clients/80707/File/bugobolelunap.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/2d7heseddlv19v3mc0n9r0ous7/gorawuzanofapulujav.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ecc34f856d9---32337966296.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/765q6l4d3mu2bhj0ot36ifhv0e/64016734120.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/32435088108.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/59a81b29409c4b1345f62a98dd1ffec9/49993299931.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9b2f71daa---jamolobopezerobapib.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/tumofeva.pdfIn PDF document text
    • http://asustainable.com/global/file/87683448059.pdfIn PDF document text
    • http://gramercygrand.ru/files/file/xitafofetimisijefagasakig.pdfIn PDF document text
    • https://ckd-otto.com/contents//files/sigerared.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c86cfeb54bf---49196822313.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/65946170075.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/nafupejimunezipu.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/83697353665.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/v0o4pctqg700bhophs60dmceh6/44874027924.pdfIn PDF document text
    • http://e-cluny.cz/UserFiles/file/xemapetifu.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6eb4cf0050---wugefepup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=tecnicas+de+la+terapia+familiar+estructural+minuchinPDF 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 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_off0001d9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D9E5 18388 bytes
SHA-256: 46a0052528567da31d247dc1c1f68c8edef893333553606ee35f20c31b5d7cd3
font_01_sfnt_off000208fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x208FC 10828 bytes
SHA-256: e385db67914679c792f092360ad1a9f271c82bf6e9d12bf6577c88b6dd799f61
font_02_sfnt_off000221be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x221BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.