Malicious PDF — malware analysis report

Static analysis result for SHA-256 574234dacfe89160…

MALICIOUS

PDF

105.4 KB Created: 2021-06-25 12:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 401ffd4c283cf509c2ec855ddf51e747 SHA-1: 6f8317d9948749a6c1d2ef96107c281a9eb7f94f SHA-256: 574234dacfe89160ab472dc3841cca5523d6027979a3905e8ed9334ee5d8ab0a
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature. The presence of multiple links on potentially compromised CMS uploads suggests an attempt to obscure the true destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7171

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 http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5da72e8bd---78324508852.pdf In PDF document text
    • http://fletcherfamilyreunion.org/clients/52745/File/ruxanolefe.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/tnbm8teb3cr0lu9mncao37g0s8/jofepakopubuzak.pdfIn PDF document text
    • http://naitikfashions.com/ckfinder/userfiles/files/87155609864.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607504017de9c---sasobogetini.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/q4b3p813q9u3lda39lk5bfdo36/51772553919.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba596df2118---juguzad.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5861018ca3---pefopadofisipazimo.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160798db0363f4---tuxopusodegot.pdfIn PDF document text
    • https://vestol.bg/files/file/7200185434.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/36916262981.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/xogugujoda.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/vkaej3thivlkdc3f47hgk4k9o3/supijula.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/7b8f3f96684f7db69b5aca5c5d89bd29/42084661780.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/pixigenirilov.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fa93b013903c0f8bb2d5f318fa4f5b80/74468059008.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/pelixala.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=download+complete+pdf+to+view+all+pagesPDF link annotation

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