Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d10992c8ea50272…

MALICIOUS

PDF

39.0 KB Created: 2021-09-19 20:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 80942e899b2fbdfa320ffde6590d5590 SHA-1: 664d92053a26fa66680ef140aa152acd39a189ae SHA-256: 9d10992c8ea50272170064dcd43ed724f543d306d11b20362dbab22103581fef
174 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and ClamAV, indicating it's a phishing or trojan delivery attempt. The heuristics suggest it's an image-based lure designed to trick users into clicking links hosted on compromised CMS uploads, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8684

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 39 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://sbsedupatti.com/sbsedupatti/userfiles/file/37512267062.pdf In PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/19246155710.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/22993096703.pdfIn PDF document text
    • https://sieuthimaycafe.vn/uploads/file/78475116579.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/bcr7ssqkagfkenn2sre9ehslt5/66243892186.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/fuau6gihfkgd23dlg8a9cvgsvg/24570136006.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/82628793223.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/161403ae3db3d2---90156271259.pdfIn PDF document text
    • https://equimat-cheval.fr/file/65548866761.pdfIn PDF document text
    • https://portalbime.com/UploadedFiles/New/file/bemeniveruwukukok.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/87914639642.pdfIn PDF document text
    • http://omnoiptv.com/outscapes/admin/ckeditor/uploads/ck/files/17146954501.pdfIn PDF document text
    • https://aljuboori.com/userfiles/files/47826071183.pdfIn PDF document text
    • http://hitelesen.com/userfiles/file/purez.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/6f3b08b722f39b86680a8548e8865478/65551520915.pdfIn PDF document text
    • https://claudiodituri.it/uploads/sijemadowinigaw.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161325813b0a6b---wijanujipapevapexij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=unit+elastic+definition+economicsPDF link annotation

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