Malicious PDF — malware analysis report

Static analysis result for SHA-256 66af782f49887b58…

MALICIOUS

PDF

73.7 KB Created: 2021-09-05 02:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1736b6d7bec06ebd81370026b58e1b4f SHA-1: 262bc4605140482b7344e87e74dacbcf65db944c SHA-256: 66af782f49887b58302fb9a569d5f1b5d234151fe3dabf136b530de7af3c62a4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to PDF files hosted on websites that appear to be compromised or disposable. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious content or phishing sites. The document body is heavily obfuscated and does not provide direct instructions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7770

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
  • 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
  • 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://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/2683d58295b6176f5305d348a2ec6dc2/fexedasofekowatatu.pdf In PDF document text
    • http://agataklimowska.pl/userfiles/file/defedekedo.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/83191904469.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0cbd5cf3d---tuguwogirajesaxa.pdfIn PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/tivezoref.pdfIn PDF document text
    • http://millecolori.it/images/file/12346166495.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/eh666j0o0e5mht7dgj50ufb7j2/4506870310.pdfIn PDF document text
    • http://2446665a.ru/ckfinder/userfiles/files/42486353642.pdfIn PDF document text
    • http://blackshirts1962.com/clients/f/f2/f245580d3072b78cda2271cf7a7e3f61/File/nabinepazosugalatigupoxi.pdfIn PDF document text
    • http://www.cpnatacao.pt/backoffice/ckfinder/userfiles/files/kigexak.pdfIn PDF document text
    • http://szyqjsj.com/UploadFile/file/20210822151009113.pdfIn PDF document text
    • http://josquin-capella.de/download/70485101767.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079892d6e249---52609031768.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/uiliat6s78c9m6m1496dftadn0/gemunelasatori.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/80184363046.pdfIn PDF document text
    • https://smartech.lv/sites/smartech/uploads/documents/files/xijavujebeta.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac689770cf---45888077288.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072ab8796bb0---botiruxovebimibimov.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f68c91e6f77---palakovisilafoz.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb3d99f0b5---91601049400.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/jepuluwijez.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/remakimexokeropuvusu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=skills+worksheet+critical+thinking+analogies+answers+renewable+energyPDF link annotation

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