Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7b8cf1dfdfce047…

MALICIOUS

PDF

70.7 KB Created: 2021-07-22 11:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 368a6b7f7111e4587cea6c8f0b849a08 SHA-1: d9572c249e4bfd3d69cd66aa02854a3358bc6a94 SHA-256: f7b8cf1dfdfce047138802d0868ae6ebc6bc91de284852808a46d54cc6e9b25c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many of which point to compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for executing malicious code within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9711

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mineraux-et-lithotherapie.fr/ckeditor/upload/files/58842560663.pdf
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/b312fa8b76ab409dedc998a34c20aa57/tunokoxoxogamovimaneto.pdf
    • https://audreyheselmans.com/_files/file/sonowiwaxorixezibakawe.pdf
    • http://sun-green.nl/ckfinder/userfiles/files/63561540792.pdf
    • https://dafelia.com/files/13388596316.pdf
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073c501a1693---saxol.pdf
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/8a03917188f536ea9daba04e91cdd43f/84632771078.pdf
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/28453297277.pdf
    • http://bertrandetgastineaudesigners.com/userfiles/file/piratari.pdf
    • http://maroba-zirndorf.de/file/86203694731.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607360a6f20e4---43881774098.pdf
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/0es9vc30mmnfvtft222822s7ba/baferoxajugomun.pdf
    • https://laptoptranganh.com/data/dulieu/files/91558266477.pdf
    • http://sacoorhealth.pt/site/upload/file/65391995995.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e4b94b0f9---peximeverurevutiwapovodes.pdf
    • https://fleuriste79.fr/ckfinder/userfiles/files/75944900973.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/e9ee2028e20a45e853811cf51ecb394e/81449654045.pdf
    • http://muaah.ca/userfiles/files/nenunusor.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a99c6fb5dc2---23894038100.pdf
    • http://tuanayapim.com/rsm/files/vovoxa.pdf
    • https://tolgyesvolgy.hu/userfiles/file/6703443095.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606cb9590f022---67711618430.pdf
    • https://ecoretras.com/file/latotatuxupemipumo.pdf
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/lenonabomokuduzude.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=satellite+communication+by+timothy+pratt+2nd+edition+pdf+free+download

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