Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5bf9dc0b9581373…

MALICIOUS

PDF

61.3 KB Created: 2021-05-16 19:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e058885737f71326b6df94c99ca49af1 SHA-1: 6e7a2853e149377c5f80558512f5157e29398ca7 SHA-256: d5bf9dc0b95813736a588365f9eb32c2e343117c65ed22724b63652488b3c7bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing campaign. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to malicious content or download further payloads. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7016

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 https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883c03b6c55---75865231718.pdf
    • https://ludifrance.fr/userfiles/file/xigobomu.pdf
    • https://roweryelectra.eu/app/webroot/uploads/file/16208144815419.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/afn6cckhrtaevp7sd5o0knjbpu/zibabimitix.pdf
    • http://berallebags.com/UploadFiles/FCKeditor/20210507044456.pdf
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/31b203e49672fa3c741e6b90c835281a/70253440021.pdf
    • http://akcjonariusz.com/UserFiles/file/linatisimovukodemito.pdf
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742252aa4c7---befasuvaveba.pdf
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/h8qjbm8m168m2op3rhujf7mi9e/dibowabige.pdf
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4b9ac24ca---fanak.pdf
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/a7cf61b2dd6468e13d14f48a2db3cd1e/ladikubivuk.pdf
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/bks3rmq1chorsk8m28so6dhgo1/61674713598.pdf
    • https://alatheir.com/atheirwsfiles/file/711724521.pdf
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/300698d29aba00703daa2db204597396/81395604714.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096783a1ad3e---wawagoxak.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c6c621f66---9053517731.pdf
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160861dcee8628---99572884340.pdf
    • http://anaminfo.com/attachfile/file/31851980978.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=europa+universalis+4+france+strategy+guide

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