Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e28bb9846cc1376…

MALICIOUS

PDF

53.0 KB Created: 2021-09-12 02:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 2e67f1acb390ebe471554b1081c5f9b2 SHA-1: 6584c480995197bfe311b59c750d9e04ded873ed SHA-256: 7e28bb9846cc1376eaf52655ca4d91e329f3568e4ce4225f8f475a97fddab3bc
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely involving phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6765

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 http://vladjurnalist.ru/archive/file/rojogiminapobanuro.pdf In PDF document text
    • http://xageunion.com/userfiles/file/61078103176.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16133c76114065---bitoletixub.pdfIn PDF document text
    • https://trystsalonri.com/images/file/47779776362.pdfIn PDF document text
    • http://kingswaytyres.com/project/kingsway/uploads/file/56483165117.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4e14afa50---feruwifuso.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/lovamamowuwamepigama.pdfIn PDF document text
    • http://tcsklife.com/filespath/files/20210903113809.pdfIn PDF document text
    • https://supportsystemsvainc.com/home/ssvi/public_html/ckfinder/userfiles/files/nopobarefike.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/161394584c9126---wasexazupupekepimaburopej.pdfIn PDF document text
    • http://yule-sign.com/upload/editor/file/20210912002322.pdfIn PDF document text
    • https://ctcitsupport.com/media/files/sixosipoligikuje.pdfIn PDF document text
    • https://polytex.de/sites/default/files/29943985111.pdfIn PDF document text
    • https://verandapattaya.com/userfiles/files/81198428708.pdfIn PDF document text
    • http://kencert.vn/uploads/image/files/55902731106.pdfIn PDF document text
    • https://vicareyou.com/userfiles/file/zamijo.pdfIn PDF document text
    • http://union-montage.pl/userfiles/file/77457072808.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/54li1u91a0sjuvmami3l460kca/12912792808.pdfIn PDF document text
    • http://www.ktgroup.co.uk/ckfinder/userfiles/files/jopolubakabu.pdfIn PDF document text
    • https://excellencetogether.com/img/files/file/96955295448.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/qdltajl8g8u3jsor9q6aej4vb5/46366720364.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=juego+hacker+androidPDF link annotation

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