Malicious PDF — malware analysis report

Static analysis result for SHA-256 869e6b0a9fdf66ea…

MALICIOUS

PDF

43.2 KB Created: 2021-06-21 17:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 15e33c760159e1aa86ce198ab9a44488 SHA-1: de3d760346ca46d597b9ed711e71b08bfe481a48 SHA-256: 869e6b0a9fdf66eabaa4420dd0cb1af6e9a86eeffe0d148ce0c20ae009c6e398
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. The presence of 'cmdqpajh37/sixorafilegaxekokosefa.pdf' within a URL points to a potential command execution or payload delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9272

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://huntic.ru/uplcv?utm_term=in+my+bag+now+a+boogie PDF link annotation
    • http://showplus.ae/userfiles/files/42904060989.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/4d27p7vhaej4gfk9cmdqpajh37/sixorafilegaxekokosefa.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2922d84a1e40e5f89a907705a401a349/18400596661.pdfIn PDF document text
    • https://trimix.bg/UserFiles/File/rikik.pdfIn macro / runtime command snippet
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160738b7ceb0d5---45041204827.pdfIn PDF document text
    • http://xaydungphongphu.com/uploads/files/72078003668.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/dc2ca432887d858418f3686dac401925/40277877562.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160afd4d740077---49936807392.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609974b799092---janabizavowum.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/27qa21h8c4f7n6vieebraasmi1/fedananuziguxozoru.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0d7a0e7e62---bonakun.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/wuzidogukafobotugarabuzet.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/cd543cd4de2647b475f9a66421ba7a59/3550150628.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d3cdb72c8---zevixavexawixale.pdfIn PDF document text
    • https://connect.allianIn macro / runtime command snippet

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