Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62c2bf538f21ae1…

MALICIOUS

PDF

55.8 KB Created: 2021-09-21 10:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ffdc7f9ab658b06d24a42a0a51460b98 SHA-1: 51a74548f8916cda42ae15aa052b7d9779b93bc8 SHA-256: a62c2bf538f21ae1bce482c7746a26b9feceabc5783316bf811271554c41bf14
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6236

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://studiotecniconuti.it/userfiles/files/1935176994.pdf In PDF document text
    • https://turkeyinsurance.info/images/file/buvutij.pdfIn PDF document text
    • http://kastely-vacduka.hu/fileok/file/taruwoboladida.pdfIn PDF document text
    • http://townofwinslowin.com/flash/townofwinslowin.com/file/rijuzokenexaweroxoxulofuj.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/84482712578.pdfIn PDF document text
    • http://bzws.zhanyougame.com/ckfinder/userfiles/files/kupasiguwavu.pdfIn PDF document text
    • https://booburger.myagenda.cz/pictures/editor/files/34759371434.pdfIn PDF document text
    • https://airbays.com/userfiles/file/25316851274.pdfIn PDF document text
    • http://gemcom.org/userfiles/file/mosigagiroladix.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/70766029452.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/63229006281.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/47e96efc8ec4c6bc26b6a586cf7470a0/78041660611.pdfIn PDF document text
    • https://bosgo.mn/uploads/files/67219021992.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20210910_80DB74BABB87855E.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/megamonuve.pdfIn PDF document text
    • http://gazetavk.ru/img/file/nobakadifizebovokiwetiw.pdfIn PDF document text
    • https://history.tlshaa.org.tw/ckfinder/userfiles/files/nujujogisef.pdfIn PDF document text
    • https://solener.info/ckfinder/userfiles/files/vefotase.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/161493c22ab80a---bigat.pdfIn PDF document text
    • https://lodoshosting.com/calisma2/files/uploads/gifijupanutubimererukawug.pdfIn PDF document text
    • http://puntolinea.org/userfiles/files/bemamar.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/kesepi.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/e7dc52e0a8079a4733360aceabcc97df/jenikofonufefevidifa.pdfIn PDF document text
    • http://www.autoservis-hubatka.cz/admin/upload/ww/file/18305379885.pdfIn PDF document text
    • https://fotokeramika.bg/userfiles/file/vifexobokimilamijotubetew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=does+my+phone+need+any+updatesPDF link annotation

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