Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee301a154b38af00…

MALICIOUS

PDF

62.6 KB Created: 2021-06-07 12:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 676962d459711f72483663bb97007a32 SHA-1: 6c46070b11fba8d69dcc51cc6afa713482e52fa8 SHA-256: ee301a154b38af002e1a7a56ded6e09242722159c9a98161e5d871a66f36ae0b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics point towards a phishing or credential harvesting attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://drafthe.ru/uplcv?utm_term=bulova+tempus+fugit+mantel+clock+manual
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc99aeb855---wedunaragitu.pdf
    • https://amitadevnani.com/userfiles/file/39933058387.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/gmb4vj734muic42kp7rd3kr801/5308160384.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb8c41a1da---97783894729.pdf
    • http://ahxxzx.com/userfiles/202105/file/21411033836.pdf
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/26d30be44ca18d7155e0d4402c036a96/54405719258.pdf
    • http://apcmagon.com/userfiles/84521836030.pdf
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba242c7ae6---nurub.pdf
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16085c9b21235d---duxet.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/amo5ta5og55jn9gkstdmd6ellt/24368918197.pdf
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c268231da6---91225425018.pdf
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16077557f74eec---nopoxalesoderagu.pdf
    • http://szkolka-wiercioch.pl/files/file/vetexoxekipumuvojelaga.pdf
    • https://nmcs.ca/userfiles/files/gewozizux.pdf
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/a146236bd1158a166629dadb2915de23/resomobekewaw.pdf
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/29b603f5bc1529d37b2004c6dfe5dd47/21368765393.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/9cfcf86a3d1ef8b43b120f31777cdcd1/83410886718.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd3d.bin
3785dda06c342204d3c5d05d8369e2d4951871fcd09364e5aa89ab7e199cc637		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 5412 bytes

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