Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a63612d0fa0ffc…

MALICIOUS

PDF

62.0 KB Created: 2021-08-19 08:07:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4c28bacef8704e864e46f588c7350f35 SHA-1: b68abe36487515bce5c88a204f393384bd4e2b04 SHA-256: 49a63612d0fa0ffc599da3916d75df9e25c5146d6fbfeb9d4929be0ea11ac41c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to various domains, some of which appear to be compromised CMS upload directories. This suggests an attempt to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5897

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://feriaalainversa.com/uploaded/files/90576370780.pdf In PDF document text
    • http://tlxzkj.com/uploads/file/200840413898.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/42964946388.pdfIn PDF document text
    • http://sevvalturizm.com/rsm/files/72163521881.pdfIn PDF document text
    • https://livnica-metalurg.com/images/pages/file/19857989644.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/25266625670.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bac86744e96---kerer.pdfIn PDF document text
    • https://vanvoorst.info/uploaded/file/medobuk.pdfIn PDF document text
    • http://renovator.cz/files/file/8001098353.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/ff36fc8e08e4d5849cc064dac7fdabff/49526801270.pdfIn PDF document text
    • http://denda.co.kr/ckfinder/userfiles/files/xudodatasujosiselano.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4d58ef3293---tuvumunalasomeguxaju.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/tesozigutazetinefimus.pdfIn PDF document text
    • http://orthopediedelft.eu/files/82185064406.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/994be655b7c53039f2f117617c95f5d5/venezibosoroma.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160cdc85b65874---jixititejezuzamikojixuj.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/ro8lij3ch0k7t7j3nduqdcl065/zuduvadikuvabeg.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160779d70c4dae---tufuvelopo.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/fevamawigavizaduzajuxabop.pdfIn PDF document text
    • http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160760eacd833f---9900733135.pdfIn PDF document text
    • http://kozelsk-adm.ru/files/uploads/files/zirexuvitipozimizujakazi.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/sumejavoduf.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/14562519349.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=hop+ball+3d+game+online+freePDF link annotation

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