Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd7dc3d67d8ff92…

MALICIOUS

PDF

55.3 KB Created: 2021-09-03 09:35:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: b7b916a86293623fc1a3d3133a0dc7b8 SHA-1: c2fe6ebce71d434485e71dbd3b3dd5ea99f6c5e3 SHA-256: bcd7dc3d67d8ff926c83ec296409fbff6a9214d9e56290d10d29e824089362d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites, suggesting it's designed to distribute a secondary payload. The presence of external URIs and link farms indicates an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7576

Heuristics 6

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af91cd3583d---69920729543.pdf In PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a151f690ffc---16743524460.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/29361861653.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/ipi5f0j4rnintnqle4ul8baeod/82304389510.pdfIn PDF document text
    • http://dorrstrechy.cz/UserFiles/File/6841466090.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608395696ea0c---24292428383.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/91b372e638ce182edc43aff4fa2449a9/58902826305.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/wobowebof.pdfIn PDF document text
    • http://asfus.net/virgsurv/userfiles/file/wozidotodija.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16085f5c840950---winidu.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/b0a600f0a8142454feb3cad14365d0ba/33844426264.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/298c9daa2125862202fe06f1b5301d8e/tutedigenur.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/lk6t2m3c8g5eukl2nga9rebqf2/7673837876.pdfIn PDF document text
    • http://energo-winstal.pl/userfiles/file/46565207301.pdfIn PDF document text
    • https://soechi.net/userfiles/file/gunawaxivivugovuni.pdfIn PDF document text
    • http://pumarecovery.com/userfiles/files/sizewimobasobaxejoveguka.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610358bcbbe29---82031619091.pdfIn PDF document text
    • https://thinkglobalcompliance.com/ckfinder/userfiles/files/matuzeva.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d44c696294---68179966887.pdfIn PDF document text
    • http://atomleasing.ru/media/File/xegokejubiz.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16086c74fb1d91---3760152747.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/8d322b018f9739aaf3006c900e5aa6fd/fafon.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/sq1kmko4jsuc2oe6etrqvhnor0/zewabope.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/4fgek27deabg2ie1i73d7m2sv2/36769398796.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/caa3unqtcdv57n7hupdh1mqn70/11949089310.pdfIn PDF document text
    • http://hollywoodterrace.org/clients/863344/File/pewikisanatanen.pdfIn PDF document text
    • https://pmms-online.com/assets/file/zorolututemileveweno.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=arri+alexa+xt+user+manual+pdfPDF link annotation