Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb14ab27560b094a…

MALICIOUS

PDF

52.6 KB Created: 2021-09-16 00:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fbcf4682e4f911b41eb4d8d5727c28a6 SHA-1: 2213614637ac51d34a93e71fdaf6f043b98eb4a6 SHA-256: bb14ab27560b094a6566c366824c1e7ff8c37e232e69459dff712aff60bf0370
94 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable domains, indicating a link farm designed to redirect users. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be directing users to potentially malicious or phishing content through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6358

Heuristics 4

  • 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 https://laborke.ru/uplcv?utm_term=jump+force+android+18 PDF link annotation
    • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/ropizinuxijifozawox.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134df031aa25---30798741473.pdfIn PDF document text
    • http://cukorbetegshop.hu/files/wosibumodoresonew.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/93534753168.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a73fbae016---dexunawenolono.pdfIn PDF document text
    • https://rizecanreklam.com/images/file/jajoleso.pdfIn PDF document text
    • http://sunwisechem.com/Uploadfiles/files/61537647367.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/k9fabk1823m84m4s7rg47ios27/35365363596.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__613A95EFC89A0.pdfIn PDF document text
    • http://samocvet.org/foto/ck/files/83799661559.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/daboxe.pdfIn PDF document text
    • https://znalac.com/userfiles/file/xalipajosorinuzovutuju.pdfIn PDF document text
    • http://chineseclothingonline.net/File/roxozedenawesukukuna.pdfIn PDF document text
    • http://kientrucnhacuagio.com/upload/files/70028149082.pdfIn PDF document text
    • http://stisk.com/file/60012395882.pdfIn PDF document text
    • https://eol.org.pe/ckfinder/userfiles/files/vebaw.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/78783816103.pdfIn PDF document text
    • http://lingvastar.z-i-g-z-a-g.com/userfiles/files/vexufosovo.pdfIn PDF document text
    • http://op-gold.com/ck_image/files/48209935383.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/1db6285c32069ec41b5a819db9d605f2/18645620018.pdfIn PDF document text
    • http://emons-verlag.net/testarea/cwsCMSlight/media/files/95209556243.pdfIn PDF document text
    • https://www.milestonesmn.org/ckfinder/userfiles/files/mezibazumafejevevefus.pdfIn PDF document text
    • http://elpijisystem.com/file/18885508066.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210902045829.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/65525248308.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612efc4b6b51c---88719401957.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/8a128f6c0bb3ce69dd1f32e215f62ec1/rubudawoxisuxe.pdfIn PDF document text

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