Malicious PDF — malware analysis report

Static analysis result for SHA-256 043e52fc185e108d…

MALICIOUS

PDF

56.8 KB Created: 2021-09-11 08:34:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0366ab82e2d7d68a0a9575a40b7b184f SHA-1: ef9ada734fe4a44edd1b7db33997f43394c99e6b SHA-256: 043e52fc185e108de8f0aef74e24c45347a2efc4931a4c28a588bc8527b1c4bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://toolsatool.com/userfiles/files/62649653411.pdf In PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1613acbd93d926---kilemafit.pdfIn PDF document text
    • http://ergakiland.ru/files/files/93122409544.pdfIn PDF document text
    • https://www.xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/ferabagonuzaponanutigu.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/0db9b813d1f115b863b1991b6271e763/bunujiz.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/bepomivumuf.pdfIn PDF document text
    • https://infrastone.com/userfiles/files/nifububajorogebatazo.pdfIn PDF document text
    • https://stpm-sa.com/userfiles/file/zekagan.pdfIn PDF document text
    • http://ipoz.pl/userfiles/file/41927524342.pdfIn PDF document text
    • http://ritadas.in/userfiles/file/jozuxitozobukate.pdfIn PDF document text
    • https://360clothing.in/home/www360cl/public_html/uploads/images/files/nulejilot.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/161323002d6620---divet.pdfIn PDF document text
    • https://3eyamaichi.com/upload/ckfinder_temp/files/20210905025333.pdfIn PDF document text
    • http://membranekeyboard.pl/_data/file/63522122008.pdfIn PDF document text
    • http://neboskreb-irk.ru/uploads/userfiles/files/60614129096.pdfIn PDF document text
    • http://prplus4u.com/ckupload/files/wevelafuxoxibirof.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/47784124216.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/bpspeu0b2mlfj5324hh82gt1o7/xidufupazafelafovuwuki.pdfIn PDF document text
    • http://nfc.soo.jp/file/56572040816.pdfIn PDF document text
    • http://armanetti.com/images/56610159480.pdfIn PDF document text
    • https://iwanbim.com/userfiles/files/74867621659.pdfIn PDF document text
    • http://fairfresh.net/assets/admin/ckeditorimage/files/25112506853.pdfIn PDF document text
    • https://corpeverest.com/ckfinder/userfiles/files/sosupata.pdfIn PDF document text
    • https://homestayhoian.vn/uploads/image/files/21228604518.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/59889026339.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=animoji+download+apkPDF link annotation

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