Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09c6af4d83db95c…

MALICIOUS

PDF

62.3 KB Created: 2021-09-04 21:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 64cb5721ac9fc757e993c1a76b89cf97 SHA-1: c697584c97f8cad39a2e40d6aa4cb16597487d30 SHA-256: a09c6af4d83db95ccaf42115ca2eea8c1825bed37d95bd9856c2ecb824d63405
154 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple domains, several of which are hosted on compromised WordPress sites or use disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. The primary attack pattern involves luring users to click on these links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5895

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://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a6a648074b97dfa0a8815955cb370b47/baxaxijutolegoxabu.pdf
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/golitobedenif.pdf
    • http://midel.me/userfiles/file/ditirox.pdf
    • http://deltastal.ru/userfiles/file/35447067854.pdf
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c68c98ca2dc---21828489156.pdf
    • http://aisef.org/uploads/userfiles/file/file/44175443600.pdf
    • http://bike-aholic.com/UserFiles/file/pubobumolopugolov.pdf
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2e52e43c4---sufowebupawobijijodejewu.pdf
    • http://quaint-house.com/images/blog//file/beguwasidisipuxesedeli.pdf
    • https://tutorbolivia.com/userfiles/file/junudosupi.pdf
    • http://gioiacompany.net/images/upload/file/wufabojixonudo.pdf
    • https://ottopianos.nl/files/59808108876.pdf
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6312154362---vixixefom.pdf
    • http://mg001.cn/upload_fck/file/2021-5-16/20210516064704567942.pdf
    • http://shriadinathbank.com/uploads/43305729795.pdf
    • https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/20660858759.pdf
    • https://glozor.com/userfiles/file/nivebufim.pdf
    • http://tchid.net/userfiles/file/rozipaxizegodud.pdf
    • https://daks-96.com/f/uploads/files/texetifexomukuxo.pdf
    • http://broadgatecapital.com/userfiles/file/damedizumorinedubizugok.pdf
    • http://hockeydh.com/files/ups/files/fumefabuvuvedajeze.pdf
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f93d9739a41---bigebudimovapaxawazu.pdf
    • http://cka-shiba.com/ckfinder/userfiles/files/30933329026.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=firmware+development+in+c+pdf

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