Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84444953b9374d3…

MALICIOUS

PDF

56.7 KB Created: 2021-09-01 14:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fe51449069b23b116236f7776d0a7b4f SHA-1: 4ca538657822099c908d3b9f4c864914d32edd23 SHA-256: c84444953b9374d3f20984a0a3dfcbdc4ca6e6c2e7b618dfcd722c5fbef8325c
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV, indicating it is a Pdf.Phishing.Trojan. The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to redirect users to malicious content or downloads. The presence of external URIs and link farms on compromised CMS uploads strongly supports a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4354

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://sicilalluminio.it/userfiles/files/wobowu.pdf In PDF document text
    • http://tdbakademi.org/userfiles/files/23466710609.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3214ee5af---52569948211.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/xatujubaramu.pdfIn PDF document text
    • http://droprint.my/home/ququ4923/public_html/userfiles/file/kazomegoxoturugupewofipo.pdfIn PDF document text
    • http://mistral-paints.cz/userfiles/files/fusewoweragibigaxiwa.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/dexudetujavepineraba.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109270fe7a2e---wadanonipivijomemen.pdfIn PDF document text
    • https://luatsuavina.com/userfiles/file/96057847649.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3e5d8a44e---favota.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/kitudetinazoxuvamebokug.pdfIn PDF document text
    • http://www.yevres.fr/ckfinder/userfiles/files/86709256125.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/da0ff96f6838cfe88a7d9c4ea043eb3b/42273361866.pdfIn PDF document text
    • http://inruho.ru/ckfinder/userfiles/files/lofibomonomavula.pdfIn PDF document text
    • http://quinta.cl/upload/files/75618770498.pdfIn PDF document text
    • https://pasarangroup1.com/contents//files/vugemimakerisetajekolu.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a5837c4d0b7---jomasoxeduvulunaj.pdfIn PDF document text
    • https://rtquery.reitoken.org/Coaching123/images/files/bosamofoterojasagipotowu.pdfIn PDF document text
    • http://bebaldebaran.eu/userfiles/files/41982207338.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccd7b462a7d---74893402943.pdfIn PDF document text
    • https://marathonlaval.com/userfiles/files/ramevamanipewupazus.pdfIn PDF document text
    • https://thisissati.com/userfiles/files/32502132339.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/22577312800.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/bhsi8vnodqm8upath0p8mo3hd1/tulebenozufomaribujuro.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070fb4f73d9c---duxaparakizuxebebu.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608467a19d5e6---wolijurenofaleraletekawi.pdfIn PDF document text
    • http://regmac.net/userfiles/files/mufat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=sweet+face+camera+downloadPDF link annotation

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