Malicious PDF — malware analysis report

Static analysis result for SHA-256 254f519a28df47f1…

MALICIOUS

PDF

108.7 KB Created: 2021-06-03 01:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90cfc540cad07f86ac110566197111e0 SHA-1: 614c94d1a685803ba165f613656c1a6bf881b55c SHA-256: 254f519a28df47f1a7bc2c28d3b0c3e9ace9b994daef9f2d09f8cb91e7e74466
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm that directs users to download other PDF files, many of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to distribute further malware or phishing content. No scripts were extracted, but the structure and URL patterns suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9121

Heuristics 5

  • 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
  • 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://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/342cf862c4909baace7942b7bdafb517/74343596020.pdf
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/860116e8c682bdb88ddcd4b9ff0cd927/fifukagofa.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/0grv1bf7ppd1bmoahbvh590i7f/43621021848.pdf
    • http://vds-construct.pl/userfiles/file/88429698792.pdf
    • https://7gking.tw/upload/files/70949964787.pdf
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16078c2134f175---sexadowibasekame.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/oto95ipvh9gm5kbe0ii0u24eoo/zitoloninerobanuj.pdf
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/0aeb4d7096d5ff7d71acd0f454093f0b/jasikimubuxo.pdf
    • http://hanhthien.net/uploads/file/98967866564.pdf
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/2c6ujs8l5p3q6cl9pc7cfoong1/64660771307.pdf
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/9c95b3ba9d2c01cb897b9f421f9ad974/zozaniwutojuterofegag.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b0b5df84f---lidagerir.pdf
    • http://naturallabs.fr/userfiles/file/53227367644.pdf
    • https://sjalikave.hu/pictures/file/zusuvetuzakokojuxipewoniz.pdf
    • http://www.centralperdana.com/file/tesula.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e56b9c0e16---13321005882.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=twilight+breaking+dawn+part+2+in+hindi+free+download+720p+moviescounter

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