Malicious PDF — malware analysis report

Static analysis result for SHA-256 5627e272701dd71d…

MALICIOUS

PDF

62.3 KB Created: 2021-08-08 13:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 41e0fc328065acb915f9cb7d8dd70ae1 SHA-1: 0e050c514e471948b7a6bcccf7e14957b8b23f29 SHA-256: 5627e272701dd71df08218d137d43325c1c0ddd75cfc85ea2757d9db43b652f2
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and disposable hosting, likely to redirect users to malicious content. The presence of external URIs and link farm structures strongly suggests an attempt to lure users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7265

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://pixomot.ru/uplcv?utm_term=tamil+new+movies+download+hd+2020+isaimini PDF link annotation
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/6d40e385fc83d0a88a7131a5a8f8ce31/67089988688.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/5df4186744636c0fe805ba5a2e6fb374/sekib.pdfIn PDF document text
    • http://ouhkpthaa.org/userfiles/78079220726.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/ktijv1if4pplc8he4p5jg5f43f/kofaxoritumigojatavej.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/71482302607.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/35106286277.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/ac0dadf6e3f31c3f90d3d47dc617df15/nafofineka.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/93458728163.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/u6ano3h4uhiv03fql3hp5rd271/jezarabijifek.pdfIn PDF document text
    • http://capitalclassof1970.com/clients/e/e7/e78cae7b17622b0161c193cbd63f4fd0/File/pidikepufokebu.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0816c3d7cd---xewevidu.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/7ecf664664ad07d7143a2628d0f7d43a/xekobunifise.pdfIn PDF document text
    • https://bak.vn/upload/files/71376260844.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/53e1a999167fd6daf1909c20101817db/pixobirazopebemulax.pdfIn PDF document text
    • https://www.eos.org.eg/ckfinder/userfiles/files/gugitavoro.pdfIn PDF document text
    • https://mountmoriahcamp.com/media/koboteboridupe.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a29f914ca---99329387001.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/tejesemebagu.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/f7b667fc79f8cf6a4c35a33cb054d929/89980671109.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa29fb3fcc---faluzawazi.pdfIn PDF document text

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