Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a084be49bdb1f5…

MALICIOUS

PDF

52.6 KB Created: 2021-09-02 14:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a8e5ed3982fd0547770a32409c70853b SHA-1: 18e2d68ae3858b70228e39fcde952437ada5124a SHA-256: 03a084be49bdb1f5dabc6ec101f3eab6a4e49de4e267aeda0d2a73a4016fa827
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of links, many of which point to compromised WordPress sites and disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. The structure indicates a link farm designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4952

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 http://hani-bee.com/userfiles/files/xuzudawowaranod.pdf In PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/6ff5eed1653a1da495adfa6d953f84fe/xomenipeg.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/8f4ea661abb4df365949e8946d5277db/33062720372.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/1caaf1ac9a1778dd0a3904dcbb6d70e6/ritud.pdfIn PDF document text
    • http://hotelniagararimini.eu/userfiles/files/fifemi.pdfIn PDF document text
    • http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/81299218736.pdfIn PDF document text
    • http://goraku-sangyo.com/userfiles/file/fajutafugavepapumerev.pdfIn PDF document text
    • https://aiwatopup.com/ckfinder/userfiles/files/delupamexuwis.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/51748946140.pdfIn PDF document text
    • https://altbuket.ru/files/lunuvujen.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911164c61cf---topewuponatapuluxe.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/kipuwes.pdfIn PDF document text
    • http://seychelles-resort.com/images/blog/file/vufogolerozejiro.pdfIn PDF document text
    • http://princeverma.in/uploads/files/61715607351.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/66727fd1549994c1178e28fb3e62bc9a/55471168990.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/161138254d7d7d---2410502471.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/39322320672.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160818eace92ce---vileriwuvad.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/fuvaxupog.pdfIn PDF document text
    • http://373113.linker.tw/files/lijodoxi.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/mijet0d2v5svgehqlthf8u9cm6/regipujinateximopof.pdfIn PDF document text
    • http://namhungholdings.com/uploads/ckfinder/files/94085792404.pdfIn PDF document text
    • http://xn--80aesyq.xn--p1acf/files/file/58697507624.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=add+two+pdf+in+onePDF link annotation

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