Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc18b4971e6922c…

MALICIOUS

PDF

62.4 KB Created: 2021-09-10 02:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 03d5021df1ac005ff532edb11e2846aa SHA-1: be0943aba69a1728da3ba2410f4567b6a72ce82e SHA-256: 7dc18b4971e6922c9143b44e17d0abb4541a2da8860e9ee0c2c705711b052989
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains and employing UTM parameters, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to sites hosting further malicious content or to phish for credentials. No scripts were extracted, but the PDF structure and embedded URIs are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5897

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://archism.ru/uplcv?utm_term=resident+evil+4+for+android+game+download PDF link annotation
    • http://ozt.zielonetarasy-cieplice.pl/uploads/userfiles/files/92659582063.pdfIn PDF document text
    • http://sabaispa.net/userfiles/file/30810055404.pdfIn PDF document text
    • https://mediaget.ru/userfiles/files/20811960423.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/bupilofupedifimi.pdfIn PDF document text
    • http://thinhhoanggia.vn/Images_upload/files/noropowu.pdfIn PDF document text
    • http://szmchem.com/userfiles/file/pewexonugopupusunoruta.pdfIn PDF document text
    • https://gitteszoneklinik.dk/ckfinder/userfiles/files/litiwafagojadonofa.pdfIn PDF document text
    • http://anapro.com/ckfinder/userfiles/files/14193640555.pdfIn PDF document text
    • http://heathrowairporttaxi.website/userfiles/file/rasafabexememuvitisavusa.pdfIn PDF document text
    • http://coytex.net/ckfinder/userfiles/files/89839221684.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133ee12dff99---56392418328.pdfIn PDF document text
    • http://bftt.marketsearching.com/upload/files/faxukerege.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b89e428aa---duzixofodej.pdfIn PDF document text
    • http://poorclarescork.ie/images/rawubawumugomozagubuzago.pdfIn PDF document text
    • http://diennuocdanang.com/uploads/image/files/diloviwabef.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/66640676520.pdfIn PDF document text
    • http://revistaspontan.ro/assets/ckfinder/core/connector/php/uploads/files/domesumaguf.pdfIn PDF document text
    • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/kawewexekujimipusovut.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f481792438---gemulipurukivokija.pdfPDF link annotation
    • https://travellifeafrica.com/ci/userfiles/files/newutebifewasuwagotiv.pdfIn PDF document text
    • https://callmarkinvestments.fortunekenya.com/callmark/files/66752389066.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/79327733537.pdfIn PDF document text
    • https://diarch.in/WYSIWYGImage/file/dunajijawalabafaxoruzox.pdfIn PDF document text

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