Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d12d5ad0b47544…

MALICIOUS

PDF

59.5 KB Created: 2021-09-17 14:22:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4344c7d6bf4f3f2725cd458c3262cad5 SHA-1: 848bbdf86e62c4b0628f0192fb525b5b87657503 SHA-256: e9d12d5ad0b475444b96aa224af148c50393b50639e5fa5508a20d0474f1c748
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. The presence of a URL with 'decrypt protected pdf' in the query parameter further supports the lure of accessing protected content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7684

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://wakesup.org/userfiles/file/41460452816.pdf
    • http://dallard.fr/ressource/site-image/files/84848909369.pdf
    • http://pate4me.com/userfiles/file/97662163331.pdf
    • https://broadcasthub.com/ci/userfiles/files/56750109619.pdf
    • http://www.dilipprabhavalkar.com/images/file/nolibokaxopogofekunevuwug.pdf
    • https://drlalashow.com/php/billboard/uploads/file/47763494276.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/3da80e4bad30f38d61dc2712adf58686/vomirolunanat.pdf
    • http://fjsxsx558.com/upload/files/kijinuse.pdf
    • http://villahetzwartepaard.nl/survey/userfiles/files/xaxenekupijuviwof.pdf
    • https://plagij.at/ckfinder/userfiles/files/winodejevutofo.pdf
    • http://fotostudiovaccari.it/userfiles/files/fobomuvikupidikemuzazivo.pdf
    • http://woodbridgeabw.com/uploads/files/47799662949.pdf
    • https://organicearthfiji.com/documents/file/49203706145.pdf
    • https://inprovitmexico.com/ckfinder/userfiles/files/64545529550.pdf
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/niwuxuve.pdf
    • http://defhjdr.friend-match.com/upload/files/36280589987.pdf
    • http://thaihotelsale.com/FileData/ckfinder/files/20210912_107C5A9141E495C0.pdf
    • https://clic-essc.ch/ck/ckfinder/userfiles/files/dutin.pdf
    • http://grafitym.kz/files/file/95646284989.pdf
    • http://studiopedrazzini.eu/userfiles/files/70778681683.pdf
    • http://crimesla.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wogagimekasole.pdf
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/23285937390.pdf
    • https://fiscalonline.eu/app/webroot/files/userfiles/files/nuvilarubusajej.pdf
    • http://aan.kz/ckfinder/userfiles/files/65555894657.pdf
    • http://work4shop.cz/userfiles/file/lodibimeravosugir.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=decrypt+protected+pdf

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