Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30ed970cd977235…

MALICIOUS

PDF

60.9 KB Created: 2021-09-03 11:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 05d30166855fa2126c85d2ba87770c4f SHA-1: 32c4b82aae535bbdcd6c7f43b72e64411e0748dc SHA-256: c30ed970cd977235db5cafb9fcd3a4b5aba6b37f5363e30a7052df1495d9b3ca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised or disposable domains, suggesting a link farm or phishing lure. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16080f59143a0f---fugizej.pdf In PDF document text
    • http://xedaptap.net/userfiles/file/tudixebenipem.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/440cc66567772bb79e371fc62a44c505/94313054423.pdfIn PDF document text
    • http://4rrecycle.com/files/file/donowolezaditotagiranej.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/gevarakewuvuz.pdfIn PDF document text
    • http://ttmm.co.jp/ckfinder/userfiles/files/tomosafawulowumojosemazi.pdfIn PDF document text
    • https://bangprice.com/bangprice.com/beta/cms_image/file/murujoronudifunabeti.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/50023024876.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/ccb674d049deb13a576a799ba3f85a7b/78771581865.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16094683bdbc69---kapesuro.pdfIn PDF document text
    • http://tech-in.info/bramy/userfiles/file/lugeperez.pdfIn PDF document text
    • https://csp-pub.com/stockages/files/pawemutorazuvil.pdfIn PDF document text
    • http://padgettlawreunion.com/clients/79772/File/bebikiverako.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/4c59da74cba96a6964ef65eeee5ba657/3231832733.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/9d40b86748bb823b14f2448e87de27df/baxikatupun.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0fc6902e9---sijazavofi.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/618441cc48d8b10a02e0c51ddb51460b/vijegedoxuv.pdfIn PDF document text
    • https://suncables.co/images/file/68458916958.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/c1c230cc0ccb5a7afa7c5cd5cd06b98e/35069252503.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/15d1f88806bc5a41dd1c487948060849/vusiwes.pdfIn PDF document text
    • http://connect-senior.ch/uploades/userfiles/file/74616039650.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/0cd5gg2dprmvfbmjonicl0j7mp/volewokuvunorodomur.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=converter+arquivo+pdf+imagem+em+textoPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD492 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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