Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ea3174f8df934f…

MALICIOUS

PDF

64.0 KB Created: 2021-07-12 17:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-24
MD5: 02f590eb295484f20ab436d455b480f4 SHA-1: 7781f737a870f9b4418c0655ae511464b4c040f7 SHA-256: b6ea3174f8df934fc7e97e21dcebeca71f08107631244b69c82b6c3893ebb06e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7281

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://seanmore.com/userData/board/file/dujugurezidul.pdf In PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/537e6a4223bfad894a986bcc965ac282/98329564455.pdfIn PDF document text
    • http://houstontca.org/Content/uploads/files/rovinupafomajabejegeka.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc540dd243---94514759945.pdfIn PDF document text
    • http://micronforgacsolo.hu/UserFiles/file/pakarigenokobebo.pdfIn PDF document text
    • http://614move.com/clients/4890/File/97380249109.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757fa1cd891---nozarimufawu.pdfIn PDF document text
    • http://sinhorelli.com/userfiles/file/79174012014.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/wumitake.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075668795257---mipikanosikojez.pdfIn PDF document text
    • https://egokituz.eus/files/galeria/files/wafonujuwasutaxadopowiwan.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/vt3s49t42o28q72092egldh3c7/43949486781.pdfIn PDF document text
    • http://eraucheta.ru/uploads/file/makuxewevaku.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/d04911f1f88f212fe01af91eee0ad208/15633427465.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160e1dbc8c3b27---rebagetonebisojitekeputa.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/2n4vf3hf33on3nen9p6bcr5u21/54677532950.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f42e30114b---robefatifuzumipoga.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c710d08b129---46664526517.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/q5d15gmb3uk7ouaba0jgcfk5lu/limamebemomirowutapus.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/egc7qatoaujgtdvbd3j19msd67/muxosaxiz.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606d928ac2cdb---sobepu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=the+term+ischemia+is+defined+asPDF link annotation

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