Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1333a340560efc…

MALICIOUS

PDF

52.4 KB Created: 2021-09-20 12:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e14efc76c0429dd928cdb554b2101a28 SHA-1: b413a338cc5de956c7869bea2b5c4503781f9033 SHA-256: ca1333a340560efc5f20e007475ccd6f44595fbc70d8479e39870dc92f1d2f50
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which are part of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and the ML classification indicate the file's intent is to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7531

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://irlanc.ru/uplcv?utm_term=8+pool+long+line PDF link annotation
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/901qe3vi38j8j45r6r0k8qsjv2/memapumigazemugokisa.pdfIn PDF document text
    • http://ls12368.com/userfiles/file/vuragujarotepunalejoguwet.pdfIn PDF document text
    • https://herfection.herfection.tw/upload/ckfinder_temp/files/20210908175714.pdfIn PDF document text
    • http://mylodge-naoshima.com/52093109910.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/56769442562.pdfIn PDF document text
    • http://softwaretesting.kr/club/data/userfiles/file/20210904041730.pdfIn PDF document text
    • http://chinalabware.es/d/files/21244113801.pdfIn PDF document text
    • http://srcchaika.ru/files/uploads/files/40966342059.pdfIn PDF document text
    • http://cctsw.net/whly/up_files/FCK/file/20210914_115104_181.pdfIn PDF document text
    • https://anandalaya.in/resources/file/85802797316.pdfIn PDF document text
    • https://burgaseguros.com/userfiles/file/tenesebupixunasavusu.pdfIn PDF document text
    • https://peusch.lu/userfiles/files/puguxopunixusut.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/de3s36bicssirhtididm53clr5/wowotolijabuvimazaj.pdfIn PDF document text
    • https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/nefojesezixelelil.pdfIn PDF document text
    • https://vinasimex.com/uploads/file/fabiwowegevoridupel.pdfIn PDF document text
    • http://baoveantam.org/upload/files/69363057817.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/kufidegizej.pdfIn PDF document text
    • http://www.tecnobor.com/ckfinder/userfiles/files/dasisatatemowe.pdfIn PDF document text
    • http://worldsocialistpartyindia.org/ckfinder/userfiles/files/wegebizagofat.pdfIn PDF document text
    • http://retroldn.com/userfiles/file/nanufurozuvutaxodegazejin.pdfIn PDF document text
    • http://hongphuc.vn/userfiles/file/13221749851.pdfIn PDF document text
    • https://weyergans-hcc.lv/userfiles/file/60434276867.pdfIn PDF document text
    • http://27derajat.com/assets/ckfinder/core/connector/php/uploads/files/tovefonikigukedud.pdfIn PDF document text
    • http://harryreichert.de/uploaded_pics/News/file/45821070996.pdfIn PDF document text

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