Malicious PDF — malware analysis report

Static analysis result for SHA-256 c277c2d611288ae1…

MALICIOUS

PDF

54.5 KB Created: 2021-09-06 13:34:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 13107c81b10d4340d9ce3821e2b6f06e SHA-1: 2566672e6e8a5f920bb1e439d77ca0e6c2b12e21 SHA-256: c277c2d611288ae19c9ae20902fa84cd3e04b6f4ee0ef1e36a8188a5fd97f3eb
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis revealed a link farm within the PDF document, directing users to multiple compromised WordPress upload storage locations and other disposable hosting sites. These links are likely intended to trick users into downloading malware disguised as legitimate software or files.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2924

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://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/c5glgplpf1e6douu3c97lfiqv0/14702105648.pdf In PDF document text
    • http://cartopack.com/Images/file/wujakofepujafudatu.pdfIn PDF document text
    • http://bestapp4u.com/admin/uploadedfiles/file/gexexile.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/k1894q38i3afeh41vu9lgah2l6/32606592420.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/lusezujofixegoxudozilerer.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608db63e51620---pebirewojumidexoli.pdfIn PDF document text
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/17431023420.pdfIn PDF document text
    • http://jpsacademy.com/slbdavbatala/userfiles/file/domonunusomelago.pdfIn PDF document text
    • http://ballarioarchitetti.eu/userfiles/files/87304713045.pdfIn PDF document text
    • https://eberli-medical-supply.ch/upload/file/59844183570.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/89795881546.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/kibidalusakoserirux.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d30d78a6bb---jumisirugewedo.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d713cad0---42302057577.pdfIn PDF document text
    • https://valerart.com/ckfinder/userfiles/files/warimoxadibov.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c20bfbdd020---losexujozisunorudux.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f5800af18---paruvufa.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/n6d4a0qq3vhs2ksr9dudojjq5h/61340339388.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/31d34e545294fe1bb37610af82aa81ab/ganumafe.pdfIn PDF document text
    • https://unique-u.biz/images/uploads/file/89677087377.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/03c9f1b121f717bfc12c2ee3b5d5a642/tezisip.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/c476b23b219123647bbc33a980ee2202/86016212794.pdfIn PDF document text
    • http://ownlines.com/upfiles/file/kodedulinixebugibu.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac724a93c31---75350208503.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/kugufipizerotalagaweka.pdfIn PDF document text
    • https://contact-house.com/fckeditor/upload/file/zidakawikijufizuzasaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=download+advanced+pdf+compressor+2012+crackPDF link annotation

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