Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7abbd25d5fdc8c…

MALICIOUS

PDF

74.9 KB Created: 2021-10-09 20:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 477f062d48b11cc1c3a550bfa57449a9 SHA-1: a9f1527f086f103494c590fb945091a15f39da45 SHA-256: ba7abbd25d5fdc8c4865695044fae417bc7cdab74a01438885adf7f0ee705c21
154 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to external sites, some of which are hosted on compromised WordPress installations or disposable domains. This pattern is commonly used for phishing or to redirect users to sites that host malware or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6573

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://smidgel.ru/uplcv?utm_term=dictation+for+primary+2 PDF link annotation
    • http://tokstar.com/_UploadFile/Images/file/tarizokevaluwobivob.pdfIn PDF document text
    • http://easyliveconstruction.com/ci/userfiles/files/pudegegigu.pdfIn PDF document text
    • http://mbeautyconcept.com/upload/content_images/file/devedemox.pdfIn PDF document text
    • http://yesfabric.com/images/upload/File/wikudalenolasokuresofawim.pdfIn PDF document text
    • https://coombs.gocascadia.com/images/cms/file/48819441910.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/66d924e08ac4c2172acd3140421fa7a2/limilo.pdfIn PDF document text
    • https://produktybhp.pl/pliki_user/File/rowezarimulasogegi.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/58e6f2c8d817e6a3b047caa74af368e9/pigilumaxarato.pdfIn PDF document text
    • http://adgroup.co/userfiles/file/30532103847.pdfIn PDF document text
    • https://kaptenhoki.net/contents/files/witesivotumodexudosafi.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/35518943805.pdfIn PDF document text
    • https://408of53crownstreet.com/assets/media/files/roromawudilejodoneveza.pdfIn PDF document text
    • http://azseal.net/uploads/userfiles/file/67816478001.pdfIn PDF document text
    • http://xaydunglenguyen.vn/upload/files/e96ed4.pdfIn PDF document text
    • http://uptownfallschurch.com/uploads/files/67035678635.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/8b41611cacba5d4d76ab1127b21d6373/26420197427.pdfIn PDF document text
    • http://zavalinka.by/var/upload/file/47875664181.pdfIn PDF document text
    • http://www.kyousei-fukushi.or.jp/system/ckfinder/userfiles/files/67575562973.pdfIn PDF document text
    • http://www.multigacos.com/admin/uploaded/fck/file/86754286385.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/bf23ac4fbe9febd55eee7ac45f586b63/88421144336.pdfIn PDF document text
    • http://www.bordadoindustrial.com/ckfinder/userfiles/files/disugisefunasofun.pdfIn PDF document text
    • http://artikos.pl/userfiles/file/72416924274.pdfIn PDF document text
    • https://bunyaminerdemir.com/resimler/files/38737392735.pdfIn PDF document text
    • https://laps.pl/userfiles/file/fufemadasivilaso.pdfIn PDF document text

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