Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e53e96368207ca…

MALICIOUS

PDF

75.1 KB Created: 2021-09-02 12:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: da24a39d10c0e695ff6982cbc9bb8bb3 SHA-1: b99eea65ff9cb1f2ff8e95136c2e40189657eae7 SHA-256: a7e53e96368207ca8229b4e2a6e1c0723b25efce4d6123652ba6e8047c15f185
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous URLs pointing to external sites, many hosted on compromised CMS platforms or disposable domains. This suggests the PDF is used to redirect users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5886

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://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/16094161823bb4---rinul.pdf In PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c739a9872fc7db8710b830e5b5aa2e6d/57726992584.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///lipikutepetafaseko.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/cbc96a2485b24ef7bf5218d59df7830d/14514640323.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607573653e7ca---nizedofonokibusivufi.pdfIn PDF document text
    • https://timjanen.se/anvandarbilder/53/files/57345899373.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/daj0mq61v85g3rmvkmqdfmjp33/rimebe.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16130436c8e228---jodezopimawemupotejak.pdfIn PDF document text
    • http://nc-israel.ru/upload/files/mugajal.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f2797f246d1---jusojoboronozuw.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160b1116514ab8---81500328413.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607616e11bd54---81145559272.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bf3c9687d14---53091753792.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/rolagowotetun.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e41f89a94---tejepebale.pdfIn PDF document text
    • http://k1a.ru/images/files/file/41331990390.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/17051343957.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/21543546124.pdfIn PDF document text
    • https://securitegenerale.tn/userfiles/file/9180986420.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/42f4ca9cd2139506e2de820191ef625d/60810346301.pdfIn PDF document text
    • http://phanphoiongnhuahoasen.vn/upload/files/52397731721.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c47235d8bea---23642399067.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/nanumexurasutaxazoruwok.pdfIn PDF document text
    • http://www.iece.in/userfiles/file/18380475084.pdfIn PDF document text
    • https://e-midas.ro/files/file/kuwaferemufewuronigisi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=si+units+prefixes+worksheetPDF link annotation

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