Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a5b45885b22ba9…

MALICIOUS

PDF

73.5 KB Created: 2021-09-01 15:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f2b3d78b0435f972d96c15759c95ab07 SHA-1: cac4247814b2261c5f2a60154b119f63f045163f SHA-256: b0a5b45885b22ba9282a6d37066b34f4c9d5b236e66b78b76cea499bbcb86ca8
94 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to potentially compromised websites and disposable hosting. The ML classifier strongly indicates malicious intent, and the PDF structure suggests it's designed to redirect users to external resources, possibly for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9238

Heuristics 4

  • 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 http://scandirent-new.ru/uploads/assets/file/52040208916.pdf In PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fecf349b08---99607155750.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/8f323e1aa0f8f34ac3b03cac97783b48/62384053346.pdfIn PDF document text
    • http://tecs4.com/intranet/ckfinder/userfiles/files/39376649599.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9e756c69de---31871335577.pdfIn PDF document text
    • http://svenskafik.se/uploads/fckeditor/file/vivemozitomarovokiz.pdfIn PDF document text
    • https://nenmongdangquang.com/upload/files/84133752608.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/acm1q61d78me46bkup7cc04a17/duvaxebevixe.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/a1185e87f0f647d87e2b33ad72791c2e/73976520510.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072549333e0a---selajo.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e4a850c9527---8319805831.pdfIn PDF document text
    • https://europacreativaeuskadi.eu/files/galeria/files/jirekabubute.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098768a46572---zumuruwipemutigibixugutit.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d3e1eb94f---fosexifuf.pdfIn PDF document text
    • http://dent-pro.cz/pic/file/70650014008.pdfIn PDF document text
    • http://salon-urody-bellis.pl/images/file/wifipijesog.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608e33e43dc4b---piguxosudarepodezetuzana.pdfIn PDF document text
    • https://infypos.com/infyposcms/media/deruwawagogofojalil.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/7b1a025c308b6cd3e28fecb9f9485c5a/bisexenikemadi.pdfIn PDF document text
    • https://botorka.ro/userfiles/file/futuvobapujeniw.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/80284318354.pdfIn PDF document text
    • http://www.motocams.cz/ckfinder/userfiles/files/lofofiseluniberinatenawoj.pdfIn PDF document text
    • http://edanieltour.com/FileData/ckfinder/files/20210702_6E3E763EA265818D.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/fa187faf7734f06620882172544d2575/lowufolilawudomobon.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/viturotijeni.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=the+book+of+jasher+pdf+downloadPDF link annotation

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