Malicious PDF — malware analysis report

Static analysis result for SHA-256 270da6f375710d25…

MALICIOUS

PDF

64.0 KB Created: 2021-09-18 10:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 51af7d90d601ca2119ca60b6c8013264 SHA-1: 73b0566c1103422952f8d4af02144c8f11d37783 SHA-256: 270da6f375710d258821cb1f41126a00eec6ba61d83790953f36ecb83629c8ca
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or scamming purposes. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6405

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/uplcv?utm_term=how+to+make+a+live+photo+lock+screen PDF link annotation
    • https://kominove-centrum.cz/media/files/file/44123562875.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/40464301514.pdfIn PDF document text
    • https://celebicatering.com/upload/ckfinder/files/refazidov.pdfIn PDF document text
    • https://onderdurdu.com/upload/ckfinder/files/94907654625.pdfIn PDF document text
    • http://safires.cz/ckfinder/userfiles/files/modikotelusajitimid.pdfIn PDF document text
    • http://location-appartement-venise.com/italie_documents/files/giwetutogubosutujowiku.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/57652604902.pdfIn PDF document text
    • https://wittnebel.dk/file/venodusaxadepejowepovet.pdfIn PDF document text
    • http://lakshimi-kaatsu.com/user_data/packages/default/imgfiles/51444095143.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/r4r09iof6bg830b355b2u81071/rewom.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/zewenugedawesovadilo.pdfIn PDF document text
    • https://mashtalkandil.com/userfiles/file/jomosirowebepu.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/85386995954.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/40220104836.pdfIn PDF document text
    • http://thehedgerowchronicles.com/ckfinder/userfiles/files/kuxadosozad.pdfIn PDF document text
    • http://swaminarayangm.org/userfiles/file/naxazinalokekidut.pdfIn PDF document text
    • http://homeloanz.net/images/e/file/16188132536.pdfIn PDF document text
    • http://nasfthr.com/userfiles/file/47535520266.pdfIn PDF document text
    • https://spandoekland.nl/userfiles/file/pakikimodawuw.pdfIn PDF document text
    • http://suphammamnon.org/uploads/files/fakowavefupobomowaziwo.pdfIn PDF document text
    • http://kasargod.net/uploads/file/fepoferezorif.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/28222294219.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/8fb5c3df24881a7571e2c89a9db677ce/48413110615.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/bujususugefazobavakafiji.pdfIn PDF document text
    • http://japan-railpass.info/images/blog/file/pagogenogonatoxumadokaxi.pdfIn PDF document text

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