Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ceb7033a46aa7de…

MALICIOUS

PDF

39.0 KB Created: 2021-10-07 08:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: a29a203f073cae797d2be9cac9c230db SHA-1: bfc2997207508cb26fda2d0627fd0a6a7e3d4a56 SHA-256: 1ceb7033a46aa7de76baf08256713f7240070af542e44c7f7ec266ef7465350e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size and image-only content, typical of a screenshot designed to trick users into clicking a link. Multiple heuristics indicate it's a link farm pointing to compromised CMS uploads and disposable hosting. The embedded URLs likely lead to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8579

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 38 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 https://synerhu.ru/uplcv?utm_term=green+lotto+result+today PDF link annotation
    • http://aliguoriarchitetto.eu/userfiles/files/95386613576.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/48768b0074a1ef170691d42f036369b5/wijejebofetulivim.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/judorefiwulojigikefabujol.pdfIn PDF document text
    • https://unaizahic.com/Files/files/weridasifupit.pdfIn PDF document text
    • http://ros.by/ckfinder/userfiles/files/sagafobigavajetofapijuwix.pdfIn PDF document text
    • http://mtegl.wsystem.sk/userfiles/files/85293323415.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16134343e6cd73---zubusojateze.pdfIn PDF document text
    • https://bunianco.com/other_files/File/93184187999.pdfIn PDF document text
    • http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/81382763605.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb259ce640---mokotuzufowubig.pdfIn PDF document text
    • http://farmaciafoglia.eu/userfiles/files/71878473423.pdfIn PDF document text
    • http://weifong.tw/fckimages/file/midagutujavedelirin.pdfIn PDF document text
    • http://togul.org/sites/default/files/file/lonijit.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/83055813677.pdfIn PDF document text
    • http://dienhoabacninh.vn/webroot/img/files/40316122975.pdfIn PDF document text

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