Malicious PDF — malware analysis report

Static analysis result for SHA-256 3229ebe41bb99de3…

MALICIOUS

PDF

40.1 KB Created: 2021-09-06 20:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: d7edc3dad04569f1fa302510d11db4ed SHA-1: 27aaae59e97c5be8a995c93afd8cec54798c439e SHA-256: 3229ebe41bb99de3224eb0bd3127f3e98c97ae36c9f61f553110790da623d112
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9455

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://www.centrosanmarco.eu/img/news/files/samurisuzamizazenuwin.pdf In PDF document text
    • https://arnetbilgisayar.com/upload/ckfinder/files/vavilelusemi.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d5a661603---51248697869.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/mizurixaxom.pdfIn PDF document text
    • https://0a3exp.com/upfiles/editor/files/jetosekawapotofaxaw.pdfIn PDF document text
    • http://cu-mbc.com/ckfinder/userfiles/files/47240319734.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/0b2d9f00ae5a1a060a0132feecc07882/rokugepilom.pdfIn PDF document text
    • http://bg104558.agchost.com/userfiles/files/jiwamixixojunabizumuzat.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/cr3m64g90vfgldk1niolcuhr8v/mikemusetufujajetaxij.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/gemesixejuvonakaxa.pdfIn PDF document text
    • http://cocoal.com/uploads/file/8461707445.pdfIn PDF document text
    • http://eco-versute.com/app/webroot/ckfinder/userfiles/files/tusezumijipuravigu.pdfIn PDF document text
    • http://udelimpa.es/ckfinder/userfiles/files/77008456236.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/ac4161b0775aec8a5ff0976c524e8550/16625550938.pdfIn PDF document text
    • https://arhstroi.by/uploads/files/32766853202.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/90094484758.pdfIn PDF document text
    • http://sun-tes.ru/files/file/32475450965.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/jinibolebojarogodo.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f5bacd9d4---63839536905.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/180444047834.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploadIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=divya+himachal+competition+review+pdfPDF link annotation

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