Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ca4ab8f2ade54e…

MALICIOUS

PDF

64.0 KB Created: 2021-06-25 07:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 89a1340447c5eff987654b229675968c SHA-1: 6f5c655dd94cf70fd0f981dbbdc81b4e59f5cdc4 SHA-256: d2ca4ab8f2ade54ebd2bf54b388f42e991cfd95b816b580e3a1ff44f82900b18
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites, likely intended to host malicious payloads or redirect users to phishing sites. The document body, though heavily obfuscated, contains references to car racing games, suggesting a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8681

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 http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/770b8c71e2e5d7d09abe38712e3a740b/53747040113.pdf In PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/791a947efbb745701aff9993e4cab814/92978068475.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b462737c2da---38984330200.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/41628658250.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607803b4dee06---84566776892.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/7jt1ahfetccgkcs8i2au985efc/litigegunesivora.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0f92d4280---buxejutodaminuzu.pdfIn PDF document text
    • http://gostinica-domodedovo.ru/files/17471529436.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/simoxeleposazaxa.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58f3b7d6ae---93765641081.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b51b3f3b83---tusejixetur.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3b5c857b1---91763820813.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/c9e4dc2ce8c3d25e21776af06e041531/87013375105.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/6e26c621703ee3979c51c12e325aa41f/74613153408.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/0700d8bf354683cf571dda16ead75de7/fulegozarimamewedeledo.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4001a734d2---90737260156.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=best+car+racing+games+offline+for+androidPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF1 5388 bytes
SHA-256: a243bb852b5c539f85f46e51e4a2f1f7c5964eb4daef661c52b648f6d7ec446f

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