Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0ae256fc384e6b…

MALICIOUS

PDF

47.7 KB Created: 2021-09-13 21:35:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 847ee42318f8df60181c3f13c00edd7e SHA-1: 889bee805a3cc5b824a1ceb43c8ff54741210bd4 SHA-256: ed0ae256fc384e6b9b05fbdf8d063bd93229b7af0340c97e20938be1526eca4a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links, many of which point to websites hosted on compromised Content Management Systems (CMS) or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish users or lead them to malicious content through these links. The document body is unreadable, but the heuristic firings and URL analysis are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

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://dimensioninteractive.com/WYSIWYGImage/file/zemokabomewifamu.pdf In PDF document text
    • http://abwmountvernon.com/uploads/files/womaputozawazavogirufe.pdfIn PDF document text
    • http://parikshitconstruction.com/uploads/selajanumofeweti.pdfIn PDF document text
    • http://www.jasfec.com/imgs/uploads/sizilipiwevobamubej.pdfIn PDF document text
    • http://biosurfest.com/userfiles/files/fagebazebe.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b18670c57f---32854801046.pdfIn PDF document text
    • http://exima.kr/userData/board/file/21116721090.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139a8e8972b1---befixerisiw.pdfIn PDF document text
    • http://daechienglishpark.com/ckfinder/userfiles/files/83666563680.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6e84799b0---15105563186.pdfIn PDF document text
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/fekalobuda.pdfIn PDF document text
    • http://grupafurman.pl/!mag2011/userfiles/file/defogafosivogepuxaga.pdfIn PDF document text
    • https://cobrawire.com/userfiles/files/64678778900.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130b557b2f58---pofijunurulenakitovapisan.pdfIn PDF document text
    • http://wordtmann.beckbauer.eu/ckfinder/userfiles/files/mixokopasifavokozeposi.pdfIn PDF document text
    • https://kimcert.net/E/file/fubowomipiduwawitineguja.pdfIn PDF document text
    • http://studioaba.net/userfiles/files/dotimunuro.pdfIn PDF document text
    • http://laskod.hu/userfiles/file/62685129558.pdfIn PDF document text
    • https://sonerofset.com/userfiles/file/tigosas.pdfIn PDF document text
    • http://valencia.thepokeluau.com/uploads/files/murufijev.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/fetogisaji.pdfIn PDF document text
    • http://davidhammerstein.org/ckfinder/userfiles/files/putodopuxomuset.pdfIn PDF document text
    • https://bahia-group.com/ckfinder/userfiles/files/piputofuzupe.pdfIn PDF document text
    • https://szpital-sulecin.pl/images/fckfiles/file/8940000456.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/93825588341.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+cast+phone+screen+to+laptopPDF link annotation

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