Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ce9aa9bc01775d…

MALICIOUS

PDF

152.7 KB Created: 2021-08-12 01:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 00549048776671528578bf2147beb39e SHA-1: bea761591185210cd5997683cce593ffb5a78f0e SHA-256: 60ce9aa9bc01775d65f2dde02f3dbf8566081367b7c543a8ee89a8ecf7a374c8
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to distribute malicious content or phish users. The presence of numerous external URIs and compromised CMS upload links indicates a high likelihood of this document being used for malicious distribution or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8658

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.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1610951c3b256b---91114109507.pdf In PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607748c390dee---pojujutofasatazevizop.pdfIn PDF document text
    • https://kristinanamaste.eu/files/nuzuvafitivinekeme.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021070917484746.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a70bca0ad28---69146181216.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b6582f64836---20294888478.pdfIn PDF document text
    • http://whatifitspossible.com/ckfinder/userfiles/files/60125198321.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/88939542831.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/7f877f892e88e9634ffe787d8b5a9fff/zugusexufow.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608105727e955---64903848104.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210504160103450.pdfIn PDF document text
    • http://taxicityplus.ru/userfiles/file/48149170726.pdfIn PDF document text
    • http://congtyvima.com/images/Download/gebomexipibaj.pdfIn PDF document text
    • http://bptramptour.pl/files/file/zubazinawuguxoxi.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/c8c2b4a03e42de2684efda66ce2c9522/luzaxaniriwafapizazofopa.pdfIn PDF document text
    • http://lmyc.net/clients/875386/File/sumevojiwikudafowukudo.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16102ccf39a3dc---pijumazane.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/1fe5u42po42pk82vrl471pao16/pibawuk.pdfIn PDF document text
    • http://ylphs.com/ckfinder/userfiles/files/40927124540.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/redqfqs7sdm0a3n0mip8ccfqpc/12508904295.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/c830945ee01266d51c6d4c6690b54dfa/64698742580.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/lkba0hvj7ekhbida1ua40nb755/vunufevodimajewivagelofe.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/abc17233c1c3d55b541379eccd6b70ce/fosesoxisivitulukipebik.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+get+iec+symbols+in+autocad+electricalPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002439b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2439B 11144 bytes
SHA-256: 0f7b9aff0f31239f71a446ed02b828fb7f5ecce889eff3c90dc0fc5d1c3a1b28