Malicious PDF — malware analysis report

Static analysis result for SHA-256 b58b58272f104dd5…

MALICIOUS

PDF

46.8 KB Created: 2021-09-29 00:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 30b36467d90c7e1b3fcfdf7a5f0dc2b9 SHA-1: b634a2a793859cb058211c357199f382237d415d SHA-256: b58b58272f104dd52bf1c40b4e82a4019c45a716ccbeb1938214618ceac5389c
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The document contains a link farm pointing to compromised WordPress uploads and other disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7790

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://bcm.es/files/galeria/files/rifawiva.pdf In PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/65138749466.pdfIn PDF document text
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/memomefifejoxugoneparole.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/gazikeseluzopozilo.pdfIn PDF document text
    • https://matao.ro/app/webroot/files/userfiles/files/60377163669.pdfIn PDF document text
    • https://chinese-wall.tw/upload/files/jedetuniko.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cb6e87d3ac51afbc2ba17402d79be0b8/81146286428.pdfIn PDF document text
    • http://itcck.org/upload/editor/file/labegitavixige.pdfIn PDF document text
    • https://eliteprotectiveservices.net/ckfinder/userfiles/files/fewuk.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614eb83ca1ebc---62796010340.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/b3b3e799eef8d03e2bcc3b1060924b0b/44877824940.pdfIn PDF document text
    • http://tencanpowder.com/d/files/49065368564.pdfIn PDF document text
    • http://stmrcstvm.com/userfiles/file/vurepuwafo.pdfIn PDF document text
    • https://kratky.eu/files/file/tojelanimewuxaxapamidem.pdfIn PDF document text
    • https://turbooto.vn/upload/files/xuris.pdfIn PDF document text
    • http://hcm-invoice.vn/hinhanh_fckeditor/file/71842013036.pdfIn PDF document text
    • http://ibrahimabuomira.com/ckeditor/ckfinder/userfiles/files/34439061604.pdfIn PDF document text
    • http://xn--2-7sbddqrtdw3be6jua.xn--p1ai/userfiles/file/919174200.pdfIn PDF document text
    • https://iword.de/userfiles/file/43115019775.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/setizixapisanubagume.pdfIn PDF document text
    • http://thestarbusan.net/FileData/ckfinder/files/20210904_9C7250B9FA4535A7.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210916_D82766277E9DD716.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=apps+to+open+ppt+in+androidPDF link annotation

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