Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1eb1ed4f4f02cf…

MALICIOUS

PDF

76.3 KB Created: 2021-08-19 01:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2cbc962fdb90353da98c93cbca8287af SHA-1: 087c09bd1a5aceb453872f42059e01d60c7a5a40 SHA-256: 9d1eb1ed4f4f02cfb698ebff771ab81bed0b0097f0fede6ce4f1e3b868fe4a47
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. The file's structure and URL patterns suggest it is part of a phishing campaign or a distribution point for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5474

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://cardion.dk/gfx/fckimages/file/zixezoxuletoralidam.pdf In PDF document text
    • http://esejsc.com/upload/files/fulogokakirebasekiwid.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bbca067181b---28206373904.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d836c37640---13343454256.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/16075cea8e25f9---saporibovejirubodiwer.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/mudor.pdfIn PDF document text
    • http://champagne-marc-chauvet.com/images/files/jaxiwipobivevesekax.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606e7e60baaa6---sixoturuwivivefadeku.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/e1cebe0a6506dda54d8137cebe746e7e/21500693536.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c24665d439f---10306254143.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095dbec08db3---47927489011.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160f39f87c1c30---muletozato.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///86156140978.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/lumumofekelapaj.pdfIn PDF document text
    • https://shidoremicrosys.com/media/88847407588.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/vubagunabipomuvibuvomujiw.pdfIn PDF document text
    • https://laplacedesstores.com/upload/file/46119767657.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/vt92b8cbu2s1hj699hrb4ps1h3/59233785721.pdfIn PDF document text
    • http://kaowei.tw/image/files/20210615_195447.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886335858bd---bafagixogovodozuwubaxubo.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160d28b8122078---zupudokakeforulexitija.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/104f3b513742ab9615fa63c6f73ffcb2/wutogatepet.pdfIn PDF document text
    • https://transmar.biz/ckfinder/userfiles/files/vogupamajerufaguvi.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/fa9839ab889a8277fa67af06663af958/76480324519.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=solucionario+matem%C3%A1ticas+aplicadas+a+las+ciencias+sociales+2+bachillerato+bru%C3%B1o+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9A 11704 bytes
SHA-256: a50d61e943b613fdecd948a6fcf3de36715a5cfae6c78f25fae4e21d9e42222a
font_01_sfnt_off0000f773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF773 18444 bytes
SHA-256: b280aba75d637455d2e5f003eb94b1da585a1f404f7e92bfa6ccbfdada44a769