Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff72eaed9362a27…

MALICIOUS

PDF

55.3 KB Created: 2021-05-28 05:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5df281a1f57bd80590e6d68f59f243df SHA-1: 298d72b1075841b731edf7c1113fb3d4999dd07a SHA-256: 3ff72eaed9362a275abf94a91b43fbc894f4d4a8de3ded7e1790bd72cc792edd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a lure for phishing or malware distribution. The document body, though heavily obfuscated, suggests a theme of movie downloads, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7658

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/1f18da282805fbe944d1277c9cfc930d/30873315806.pdf In PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/pvt1rhoa2oag8d59lrh94efme3/30160298505.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/8868ad6c63974355f30e21b4cc7ff76d/7583029015.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abdbb3ec8f2---2173676942.pdfIn PDF document text
    • http://schokobrunnen.com/idata/47064195491.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/210185b3f47a38a926968e3d59d21338/98694837553.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c28b8434b---xexepefijenikixojupibid.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/15a7fd6162786be447f4461de0370940/sikalotafox.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607962bfd8c09---fixavodebazogemim.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/7eprfcsdjkjf1dga5b90ria49m/77406844118.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082016b952a1---30101398244.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/bbdb7c7edf3669b445965f2d2fc7249d/57135906818.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/zusidudoguvetenejasedugu.pdfIn PDF document text
    • http://dienmaythanglong.org/uploads/files/57162861471.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d83499cc7---riwekoxufa.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/kimql2nln83tu179ddlopd6pq5/giselijodisagufob.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608e740853748---81642212325.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=bloomington+filme+completo+online+dubladoPDF link annotation

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