Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b7e6b846341eee…

MALICIOUS

PDF

48.0 KB Created: 2021-09-29 11:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: c7ae6a2b179c64e1a5a5b13e6db034af SHA-1: 8b365ffca8a08f8a90e58ff969262742e36cfbb4 SHA-256: d3b7e6b846341eeefc8fec535b43732acf67f607e9b42fe9745137a1084fbfc2
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 domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload is being distributed through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6808

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://nomylo.ru/uplcv?utm_term=bilal+a+new+breed+of+hero+full+movie PDF link annotation
    • http://telek-trans.hu/editor_up/3556207322.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/91938961300.pdfIn PDF document text
    • https://saint-florentin.charcutier-traiteur.fr/ckfinder/userfiles/files/webafesabufetunugot.pdfIn PDF document text
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/gadabalonusosugegu.pdfIn PDF document text
    • https://riminabda.sk/userfiles/file/75561357871.pdfIn PDF document text
    • http://slkuang.com/v15/Upload/file/2021927833262733.pdfIn PDF document text
    • https://vzglavniki.net/data/file/35422576098.pdfIn PDF document text
    • https://venus-forever.com/image/files/33558039309.pdfIn PDF document text
    • http://saveondealz.com/ckeditor/ckfinder/core/connector/php/uploads/files/17848815538.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/xemudamibere.pdfIn PDF document text
    • http://shijijiaming.net/filespath/files/20210917170223.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f59b263b53---6408873793.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/fb4ba0a5b08289d4f67ffed21e459a3d/83073424873.pdfIn PDF document text
    • http://zhongyuemedia.com/filespath/files/20210922172520.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/dawuwadod.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/fidamisepiremag.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/welejefigaxaf.pdfIn PDF document text
    • http://abwpetersburg.com/uploads/files/kugipifopadalafe.pdfIn PDF document text
    • http://cjmfgx.morefriendship.com/upload/files/95770020695.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/r14bp6nps5dijj1sj3unepf2g5/8238679980.pdfIn PDF document text
    • https://tranhdaquyhn.com/uploads/news_file/47093238210.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/d7513b5b5e28aa1d878ca3fbf66fbb1b/wakememoruwarel.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/97474539133.pdfIn PDF document text

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