Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd38a63eb99e325…

MALICIOUS

PDF

45.6 KB Created: 2021-09-04 16:20:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 51ab04fde418a9586ed77c0dc3c3d45a SHA-1: 9c14d31d82eebccb6d261741cc58266cb8e48173 SHA-256: bbd38a63eb99e3250778fd82bd889b1d36f9b6ce95a2499100d1c755b862556f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS upload directories or appear to be part of a link farm on disposable hosting. The presence of these links suggests the document's primary purpose is to redirect users to potentially malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

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://ugrctrani.it/userfiles/files/54180799561.pdf In PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2ccdba28c---25553869706.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/31881486815.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ad37d485e---33370925615.pdfIn PDF document text
    • http://lyzjkgm.com/d/files/tijug.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/19901680263.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/zipojoze.pdfIn PDF document text
    • http://scsytech.com/upload/files/jaberitorid.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/75348626569.pdfIn PDF document text
    • https://pellevah.com/upload/files/12236086318.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/l5s6pmbt1l8aaffne9qo131cdl/49002595312.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/2557f0ae4abee64c8d48abee72c11e85/diwifasekaxutimunomojo.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/zilafaj.pdfIn PDF document text
    • https://zapret-rf.org/web/img/podborky/files/darak.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/161287a53abe63---76920798879.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bc2353a1a---54470034932.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/drnbsn3bklg23ptb1dnkj6e54s/vowafubuzarebubewod.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/disefoguparaviwivarutezir.pdfIn PDF document text
    • http://bolt.fo/public_html/userfiles/files/88606903547.pdfIn PDF document text
    • http://mobiliteit.nu/files/luxatowot.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762068d1fc2---gupevu.pdfIn PDF document text
    • http://yuha.be/_files/file/28297934705.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/17031003236.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=merge+image+to+pdf+converterPDF link annotation

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