Malicious PDF — malware analysis report

Static analysis result for SHA-256 713d7da35aa2a4c1…

MALICIOUS

PDF

51.2 KB Created: 2021-07-17 03:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 28d2e4e923e0fd307ef18c29935122e6 SHA-1: 06fb7df2a983dec38a8e2d056b57b67b33161a47 SHA-256: 713d7da35aa2a4c1a2d24fa821c4a94fd3ff65c65efccc29eeb394d76de6c5f0
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites. These links are likely intended to lure users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

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 https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/ftknopkikk5q7m34poja1597h5/17961498613.pdf In PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/11085a60aef63ff63cd97c79fa5f3315/54450249658.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210703174636.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/94565304780.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/45840932583.pdfIn PDF document text
    • http://pitneyclan.com/clients/c/c7/c7afcfad87c307b096642b2e35f52d25/File/17230938919.pdfIn PDF document text
    • https://nestuby.com/userfiles/file/lorewevenilo.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/a8e414c6c6fdb24308871221dd79230f/wedukejutonuta.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/kbnbh2dl7dvv0pt7jlof8uq03l/2243664323.pdfIn PDF document text
    • https://unosms.us/userfiles/file/30420510095.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f620e2cbc2---zojapizowisolosepiz.pdfIn PDF document text
    • http://jfk1969nola.com/clients/873000/File/7332584203.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160b4bff0446fa---66607146519.pdfIn PDF document text
    • http://www.huntsvillepr.com/files/files/zerutu.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c15017bc49---tavelufugunixavabunug.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/govarapudadofe.pdfIn PDF document text
    • http://acrclubinversores.com/files/galeria/files/wawevor.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/2657a3c73949a9196f8fb513f87a8f2a/20226496569.pdfIn PDF document text
    • http://dmscsmartlifeblog.com/userfiles/files/18568853718.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/g3kmcq8uof3juotgglgm7nfdn4/minonewunif.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/ku3unc4potnlq384c3n4iqnkn8/60182156670.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/tvqp4hktstfmp0nhde6v4mg7e3/faleripegaditap.pdfIn PDF document text
    • http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/manaxusemulifivunize.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160c546ac8d616---90871065035.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=4+letter+words+beginning+withPDF link annotation

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