Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2aada191a2be12…

MALICIOUS

PDF

73.6 KB Created: 2021-07-27 21:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0930211520204b31ce87f9de0a853f97 SHA-1: 2363029c0ec9f1072194588acc9807c45acbe7f9 SHA-256: 1c2aada191a2be1272d2f6f7556534b067a1d53560ce27c0955a6814fc40220a
124 Risk Score

Malware Insights

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

This PDF file was detected by ClamAV as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various websites. Several of these URLs are hosted on compromised WordPress installations, suggesting a potential phishing or malware distribution scheme. The file's structure and the nature of the linked content indicate a malicious intent to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3117

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://profitoolinfo.ru/ckfinder/userfiles/files/seref.pdf In PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608514ca945ae---12697928798.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a948cddf5ae---19252244893.pdfIn PDF document text
    • https://ildiko-szepsegszalon.hu/userfiles/file/85715282628.pdfIn PDF document text
    • http://ac-kenigsberg.ru/files/file/40483987667.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf0e0314d6---64694192315.pdfIn PDF document text
    • http://hocikto.info/userfiles/file/pijifozagesonubisuneleno.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160e087a196b7d---nolopabolim.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/b660c75c29557202d8cc189e18d7a7b6/60007689828.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/m105qr3pbhjh7u31b9bj27smn0/ridotowe.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/18096173863.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8810354f5---22994182020.pdfIn PDF document text
    • https://capecoralliving.com/media/file/wipabexizivebabeg.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/24e05d0d4f30d25fbc8644703bad5261/kujikodenivogududes.pdfIn PDF document text
    • http://rana-international.com/userfiles/files/67242034627.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/qav24516f1tg197vpb74ik6amn/penukakixeg.pdfIn PDF document text
    • http://trekkingsapatours.com/upload/files/wakejimomalowige.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/tagonarebetadexejodufoxa.pdfIn PDF document text
    • https://actor-conseil.com/files/file/gobagaruwelu.pdfIn PDF document text
    • http://devitohomesorlando.com/userfiles/files/80636359005.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021062814593185.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__60ECA78D1D420.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/icogfcmfm4nbrtpj1ep2hr8vpk/jizalelumunitezepizurow.pdfIn PDF document text
    • http://vonschickenconcord.com/uploads/files/wibosubofugotexofu.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/17518998752.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3c8c69e4f---bumorevovedojobanerix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=the+grand+grimoire+original+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1F 10644 bytes
SHA-256: 2c3e92532fbdc8218bebcccc69df130c47db23d91a37232a0632470994fb8b1b
font_01_sfnt_off0000f5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1