Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc7e2605b123d9e4…

MALICIOUS

PDF

47.0 KB Created: 2021-06-29 09:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: f21b85b4e52f29dac09093db7f8bff25 SHA-1: b58602c61f04086428fc225601f8e6fc66fb6db8 SHA-256: bc7e2605b123d9e4e9c2c8edaf7183da9f58251448a45845d385f937d0de414a
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to other PDF files hosted on compromised websites. The presence of these links suggests an attempt to lure users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/00ckj4jc27jm38kqvvcpvs64ld/81480788225.pdf In PDF document text
    • https://strechybenesov.cz/content/xumoserorifokobovetegiwuf.pdfIn PDF document text
    • http://diplomat2014.ru/ckfinder/userfiles/files/vejazifusufi.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d27006513a---72433369093.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077db75daa66---80294252035.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d07293f6e0---rifogutetu.pdfIn PDF document text
    • https://nikosdimos.gr/userfiles/file/repazowutilenurixazoguzis.pdfIn PDF document text
    • http://fittbike.hu/files/file/22179140142.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160988e666f92a---267943633.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/1704096868.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/g9btm8v683l350ovp5i4lhfro0/kulik.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16094d57cac0f8---zuniwe.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/kenok.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607637dd15813---zonesorodexatupev.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/gukuve.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae6b00a4d1---xadurativejuzegonugube.pdfIn PDF document text
    • https://nhadatonline24h.com/Images_upload/files/joledisaduma.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1609e39e1c3200---96704448016.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/14693002635.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a80440a44815a503ccd9c57a7a0e64e1/55488680656.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160804df4885cb---7726095791.pdfIn PDF document text
    • http://oishisushigd.com/uploads/files/monijoxudexetuxunut.pdfIn PDF document text
    • http://casavacanzesanvito.eu/userfiles/files/wasub.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/37349688816.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=adverb+early+in+englishPDF link annotation

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