Malicious PDF — malware analysis report

Static analysis result for SHA-256 48448014b446e704…

MALICIOUS

PDF

58.2 KB Created: 2021-09-14 07:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 76f639dcdfdd7011ba54c7e15acd19be SHA-1: c13fb09de99917dc23261866d2efe68b785c75ee SHA-256: 48448014b446e7048a7fb50c06a18c0482a652096612dbb49cb10ff88a5f5ed6
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The presence of external URIs and link farm heuristics supports the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9142

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://rh-h1tapi-turbo.com/contents/files/pekavijanixomilumuzike.pdf In PDF document text
    • http://5percent-design-action.com/upload/users/files/zaxajekijazopotokimunekos.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/sotulik.pdfIn PDF document text
    • http://thanhtindesign.vn/uploads/image/files/16585831022.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/49019380654.pdfIn PDF document text
    • http://seamcc.com/UserFiles/files/17534954370.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/bibowixobogabovinewu.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138c9aa2ebc8---96147367733.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/nemexuwonunapulupu.pdfIn PDF document text
    • http://www.startservis.sk/novy/ckfinder/userfiles/files/30777161038.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/76455176410.pdfIn PDF document text
    • https://dammesliepas.lv/ckfinder/userfiles/files/limojodixokufijosege.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/duridon.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/betilemunazedogob.pdfIn PDF document text
    • http://shanghaicruiseparty.com/uploads/file/sonuneruberavibejok.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/85365798514.pdfIn PDF document text
    • http://saatgaamkansarasamaj.com/admin/uploads/files/levaxopoboduvajom.pdfIn PDF document text
    • https://dolaodong.com/userfiles/file/tetibedifelavevirewedej.pdfIn PDF document text
    • https://cylinder96.ru/admin/ckfinder/userfiles/files/45471731327.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/f2e30117d14c5f59d07a76baf8d13910/62674939508.pdfIn PDF document text
    • https://liepasmuiza.lv/userfiles/library/penuvolesisedebobijok.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134dc113d29c---tiwuravidepimigipomokono.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=call+of+duty+world+at+war+zombies+mod+apkPDF link annotation

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