Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc9813f66eefd6f…

MALICIOUS

PDF

48.0 KB Created: 2021-09-29 06:59:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 4c4cbde75dc36efd64b916fa2ce9d064 SHA-1: ddded0d03a9513469ac61f8198ad575f2a52c325 SHA-256: fcc9813f66eefd6ff8df9b88e28d31fc8f2a16a31b988d566348a3e04cfbafc2
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to malicious sites for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7444

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://thenikharvconsultancy.com/userfiles/file/nolope.pdf In PDF document text
    • https://xn--psg-9lac.hu/files/files/25104684654.pdfIn PDF document text
    • http://yevres.fr/ckfinder/userfiles/files/dexagagamuwu.pdfIn PDF document text
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/gosatadajijusowuk.pdfIn PDF document text
    • http://medianet2000.net/amm_prod/image_news_popup/file/6401794964.pdfIn PDF document text
    • http://milwaukee.center/userfiles/file/86003927849.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/18453590981.pdfIn PDF document text
    • http://frutapac.com/ckfinder/userfiles/files/10329473197.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/90d974bbe6909ae96b8782bd919bb898/99805379993.pdfIn PDF document text
    • https://hardlineconstruct.ro/app/webroot/files/userfiles/files/birekenumekupuduwulila.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/fakuleseregunasirefojak.pdfIn PDF document text
    • https://natatourism.com/userfiles/files/38716497057.pdfIn PDF document text
    • http://3dtechgroup.com/uploads/image/files/11144254810.pdfIn PDF document text
    • http://alfadent-volg.ru/images_uploads/files/pibakivopixixu.pdfIn PDF document text
    • https://onlineadda.net/ckfinder/userfiles/files/75522686055.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/42518021157.pdfIn PDF document text
    • https://idroilektriki.gr/files/file/watedu.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/93264820275.pdfIn PDF document text
    • http://fewo-spreewald-schoetzigk.de/brandenburgtag/img/editor/file/xotip.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/24627266128fe4348f0b65f501da25a6/wodixewujanawosujapegas.pdfIn PDF document text
    • http://hladonural.ru/upload_picture/4719968560.pdfIn PDF document text
    • http://amicissiapiemonteisa.it/userfiles/files/10321848111.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/6f268a779e9a7f93b6f3da0ddde14fd5/tabizufup.pdfIn PDF document text
    • http://theponghop.com/upload/files/nafafigelopepenaneguned.pdfIn PDF document text
    • https://art-lamps-rali.eu/files/file/wiwuxalusivikuxiwalepeko.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=cheats+call+of+duty+ww2+ps4PDF link annotation

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